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Diffstat (limited to 'third_party/g7221/common/basic_op.c')
| -rw-r--r-- | third_party/g7221/common/basic_op.c | 1824 |
1 files changed, 1824 insertions, 0 deletions
diff --git a/third_party/g7221/common/basic_op.c b/third_party/g7221/common/basic_op.c new file mode 100644 index 00000000..1a7347cd --- /dev/null +++ b/third_party/g7221/common/basic_op.c @@ -0,0 +1,1824 @@ +/*___________________________________________________________________________ + | | + | Basic arithmetic operators. | + |___________________________________________________________________________| +*/ + +/*___________________________________________________________________________ + | | + | Include-Files | + |___________________________________________________________________________| +*/ + +#include <stdio.h> +#include <stdlib.h> +#include "typedef.h" +#include "basic_op.h" + +#if (WMOPS) +#include "count.h" +extern BASIC_OP multiCounter[MAXCOUNTERS]; +extern int currCounter; + +#endif + +/*___________________________________________________________________________ + | | + | Constants and Globals | + |___________________________________________________________________________| +*/ +#if INCLUDE_UNSAFE +Flag g7221_Overflow = 0; +Flag g7221_Carry = 0; +#endif + +/*___________________________________________________________________________ + | | + | Functions | + |___________________________________________________________________________| +*/ +/*___________________________________________________________________________ + | | + | Function Name : shr | + | | + | Purpose : | + | | + | Arithmetically shift the 16 bit input var1 right var2 positions with | + | sign extension. If var2 is negative, arithmetically shift var1 left by | + | -var2 with sign extension. Saturate the result in case of underflows or | + | overflows. | + | | + | Complexity weight : 1 | + | | + | Inputs : | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var_out <= 0x0000 7fff. | + |___________________________________________________________________________| +*/ +Word16 shr (Word16 var1, Word16 var2) +{ + if (var2 < 0) + { + if (var2 < -16) + var2 = -16; + return shl_nocheck(var1, (Word16) -var2); + } + else + { + return shr_nocheck(var1, var2); + } +} +/* ------------------------- End of shr() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : shl | + | | + | Purpose : | + | | + | Arithmetically shift the 16 bit input var1 left var2 positions.Zero fill| + | the var2 LSB of the result. If var2 is negative, arithmetically shift | + | var1 right by -var2 with sign extension. Saturate the result in case of | + | underflows or overflows. | + | | + | Complexity weight : 1 | + | | + | Inputs : | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var_out <= 0x0000 7fff. | + |___________________________________________________________________________| +*/ +Word16 shl (Word16 var1, Word16 var2) +{ + if (var2 < 0) + { + return shr_nocheck(var1, (Word16) -var2); + } + else + { + return shl_nocheck(var1, var2); + } +} +/* ------------------------- End of shl() ------------------------- */ + + + +/*___________________________________________________________________________ + | | + | Function Name : mult | + | | + | Purpose : | + | | + | Performs the multiplication of var1 by var2 and gives a 16 bit result | + | which is scaled i.e.: | + | mult(var1,var2) = extract_l(L_shr((var1 times var2),15)) and | + | mult(-32768,-32768) = 32767. | + | | + | Complexity weight : 1 | + | | + | Inputs : | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var_out <= 0x0000 7fff. | + |___________________________________________________________________________| +*/ +Word16 mult (Word16 var1, Word16 var2) +{ + Word16 var_out; + Word32 L_product; + + L_product = (Word32) var1 *(Word32) var2; + + L_product = (L_product & (Word32) 0xffff8000L) >> 15; + + if (L_product & (Word32) 0x00010000L) + L_product = L_product | (Word32) 0xffff0000L; + + var_out = saturate (L_product); +#if (WMOPS) + multiCounter[currCounter].mult++; +#endif + return (var_out); +} +/* ------------------------- End of mult() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : L_msu | + | | + | Purpose : | + | | + | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 | + | bit result to L_var3 with saturation, return a 32 bit result: | + | L_msu(L_var3,var1,var2) = L_sub(L_var3,L_mult(var1,var2)). | + | | + | Complexity weight : 1 | + | | + | Inputs : | + | | + | L_var3 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. | + |___________________________________________________________________________| +*/ +Word32 L_msu (Word32 L_var3, Word16 var1, Word16 var2) +{ + Word32 L_var_out; + Word32 L_product; + + L_product = L_mult (var1, var2); +#if (WMOPS) + multiCounter[currCounter].L_mult--; +#endif + L_var_out = L_sub (L_var3, L_product); +#if (WMOPS) + multiCounter[currCounter].L_sub--; + multiCounter[currCounter].L_msu++; +#endif + return (L_var_out); +} +/* ------------------------- End of L_msu() ------------------------- */ + +#if INCLUDE_UNSAFE +/*___________________________________________________________________________ + | | + | Function Name : L_macNs | + | | + | Purpose : | + | | + | Multiply var1 by var2 and shift the result left by 1. Add the 32 bit | + | result to L_var3 without saturation, return a 32 bit result. Generate | + | carry and overflow values : | + | L_macNs(L_var3,var1,var2) = L_add_c(L_var3,L_mult(var1,var2)). | + | | + | Complexity weight : 1 | + | | + | Inputs : | + | | + | L_var3 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. | + | | + | Caution : | + | | + | In some cases the Carry flag has to be cleared or set before using | + | operators which take into account its value. | + |___________________________________________________________________________| +*/ +Word32 L_macNs (Word32 L_var3, Word16 var1, Word16 var2) +{ + Word32 L_var_out; + + L_var_out = L_mult (var1, var2); +#if (WMOPS) + multiCounter[currCounter].L_mult--; +#endif + L_var_out = L_add_c (L_var3, L_var_out); +#if (WMOPS) + multiCounter[currCounter].L_add_c--; + multiCounter[currCounter].L_macNs++; +#endif + return (L_var_out); +} +#endif +/* ------------------------- End of L_macNs() ------------------------- */ + +#if INCLUDE_UNSAFE +/*___________________________________________________________________________ + | | + | Function Name : L_msuNs | + | | + | Purpose : | + | | + | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 | + | bit result from L_var3 without saturation, return a 32 bit result. Ge- | + | nerate carry and overflow values : | + | L_msuNs(L_var3,var1,var2) = L_sub_c(L_var3,L_mult(var1,var2)). | + | | + | Complexity weight : 1 | + | | + | Inputs : | + | | + | L_var3 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. | + | | + | Caution : | + | | + | In some cases the Carry flag has to be cleared or set before using | + | operators which take into account its value. | + |___________________________________________________________________________| +*/ +Word32 L_msuNs (Word32 L_var3, Word16 var1, Word16 var2) +{ + Word32 L_var_out; + + L_var_out = L_mult (var1, var2); +#if (WMOPS) + multiCounter[currCounter].L_mult--; +#endif + L_var_out = L_sub_c (L_var3, L_var_out); +#if (WMOPS) + multiCounter[currCounter].L_sub_c--; + multiCounter[currCounter].L_msuNs++; +#endif + return (L_var_out); +} +#endif + +/* ------------------------- End of L_msuNs() ------------------------- */ + + +#if INCLUDE_UNSAFE +/*___________________________________________________________________________ + | | + | Function Name : L_add_c | + | | + | Purpose : | + | | + | Performs 32 bits addition of the two 32 bits variables (L_var1+L_var2+C)| + | with carry. No saturation. Generate carry and Overflow values. The car- | + | ry and overflow values are binary variables which can be tested and as- | + | signed values. | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | L_var1 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | L_var2 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. | + | | + | Caution : | + | | + | In some cases the Carry flag has to be cleared or set before using | + | operators which take into account its value. | + |___________________________________________________________________________| +*/ +Word32 L_add_c (Word32 L_var1, Word32 L_var2) +{ + Word32 L_var_out; + Word32 L_test; + Flag carry_int = 0; + + L_var_out = L_var1 + L_var2 + GET_CARRY(); + + L_test = L_var1 + L_var2; + + if ((L_var1 > 0) && (L_var2 > 0) && (L_test < 0)) + { + SET_OVERFLOW(1); + carry_int = 0; + } + else + { + if ((L_var1 < 0) && (L_var2 < 0)) + { + if (L_test >= 0) + { + SET_OVERFLOW(1); + carry_int = 1; + } + else + { + SET_OVERFLOW(0); + carry_int = 1; + } + } + else + { + if (((L_var1 ^ L_var2) < 0) && (L_test >= 0)) + { + SET_OVERFLOW(0); + carry_int = 1; + } + else + { + SET_OVERFLOW(0); + carry_int = 0; + } + } + } + + if (GET_CARRY()) + { + if (L_test == MAX_32) + { + SET_OVERFLOW(1); + SET_CARRY(carry_int); + } + else + { + if (L_test == (Word32) 0xFFFFFFFFL) + { + SET_CARRY(1); + } + else + { + SET_CARRY(carry_int); + } + } + } + else + { + SET_CARRY(carry_int); + } + +#if (WMOPS) + multiCounter[currCounter].L_add_c++; +#endif + return (L_var_out); +} +#endif + +/* ------------------------- End of L_add_c() ------------------------- */ + +#if INCLUDE_UNSAFE +/*___________________________________________________________________________ + | | + | Function Name : L_sub_c | + | | + | Purpose : | + | | + | Performs 32 bits subtraction of the two 32 bits variables with carry | + | (borrow) : L_var1-L_var2-C. No saturation. Generate carry and Overflow | + | values. The carry and overflow values are binary variables which can | + | be tested and assigned values. | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | L_var1 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | L_var2 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. | + | | + | Caution : | + | | + | In some cases the Carry flag has to be cleared or set before using | + | operators which take into account its value. | + |___________________________________________________________________________| +*/ +Word32 L_sub_c (Word32 L_var1, Word32 L_var2) +{ + Word32 L_var_out; + Word32 L_test; + Flag carry_int = 0; + + if (GET_CARRY()) + { + SET_CARRY(0); + if (L_var2 != MIN_32) + { + L_var_out = L_add_c (L_var1, -L_var2); +#if (WMOPS) + multiCounter[currCounter].L_add_c--; +#endif + } + else + { + L_var_out = L_var1 - L_var2; + if (L_var1 > 0L) + { + SET_OVERFLOW(1); + SET_CARRY(0); + } + } + } + else + { + L_var_out = L_var1 - L_var2 - (Word32) 0X00000001L; + L_test = L_var1 - L_var2; + + if ((L_test < 0) && (L_var1 > 0) && (L_var2 < 0)) + { + SET_OVERFLOW(1); + carry_int = 0; + } + else if ((L_test > 0) && (L_var1 < 0) && (L_var2 > 0)) + { + SET_OVERFLOW(1); + carry_int = 1; + } + else if ((L_test > 0) && ((L_var1 ^ L_var2) > 0)) + { + SET_OVERFLOW(0); + carry_int = 1; + } + if (L_test == MIN_32) + { + SET_OVERFLOW(1); + SET_CARRY(carry_int); + } + else + { + SET_CARRY(carry_int); + } + } + +#if (WMOPS) + multiCounter[currCounter].L_sub_c++; +#endif + return (L_var_out); +} +#endif +/* ------------------------- End of L_sub_c() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : L_negate | + | | + | Purpose : | + | | + | Negate the 32 bit variable L_var1 with saturation; saturate in the case | + | where input is -2147483648 (0x8000 0000). | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | L_var1 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. | + |___________________________________________________________________________| +*/ +Word32 L_negate (Word32 L_var1) +{ + Word32 L_var_out; + + L_var_out = (L_var1 == MIN_32) ? MAX_32 : -L_var1; +#if (WMOPS) + multiCounter[currCounter].L_negate++; +#endif + return (L_var_out); +} +/* ------------------------- End of L_negate() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : mult_r | + | | + | Purpose : | + | | + | Same as mult with rounding, i.e.: | + | mult_r(var1,var2) = extract_l(L_shr(((var1 * var2) + 16384),15)) and | + | mult_r(-32768,-32768) = 32767. | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var_out <= 0x0000 7fff. | + |___________________________________________________________________________| +*/ +Word16 mult_r (Word16 var1, Word16 var2) +{ + Word16 var_out; + Word32 L_product_arr; + + L_product_arr = (Word32) var1 *(Word32) var2; /* product */ + L_product_arr += (Word32) 0x00004000L; /* round */ + L_product_arr &= (Word32) 0xffff8000L; + L_product_arr >>= 15; /* shift */ + + if (L_product_arr & (Word32) 0x00010000L) /* sign extend when necessary */ + { + L_product_arr |= (Word32) 0xffff0000L; + } + var_out = saturate (L_product_arr); +#if (WMOPS) + multiCounter[currCounter].mult_r++; +#endif + return (var_out); +} +/* ------------------------- End of mult_r() ------------------------- */ + + + +/*___________________________________________________________________________ + | | + | Function Name : shr_r | + | | + | Purpose : | + | | + | Same as shr(var1,var2) but with rounding. Saturate the result in case of| + | underflows or overflows : | + | - If var2 is greater than zero : | + | if (sub(shl(shr(var1,var2),1),shr(var1,sub(var2,1)))) | + | is equal to zero | + | then | + | shr_r(var1,var2) = shr(var1,var2) | + | else | + | shr_r(var1,var2) = add(shr(var1,var2),1) | + | - If var2 is less than or equal to zero : | + | shr_r(var1,var2) = shr(var1,var2). | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var_out <= 0x0000 7fff. | + |___________________________________________________________________________| +*/ +Word16 shr_r (Word16 var1, Word16 var2) +{ + Word16 var_out; + + if (var2 > 15) + { + var_out = 0; + } + else + { + var_out = shr (var1, var2); +#if (WMOPS) + multiCounter[currCounter].shr--; +#endif + + if (var2 > 0) + { + if ((var1 & ((Word16) 1 << (var2 - 1))) != 0) + { + var_out++; + } + } + } +#if (WMOPS) + multiCounter[currCounter].shr_r++; +#endif + return (var_out); +} +/* ------------------------- End of shr_r() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : mac_r | + | | + | Purpose : | + | | + | Multiply var1 by var2 and shift the result left by 1. Add the 32 bit | + | result to L_var3 with saturation. Round the LS 16 bits of the result | + | into the MS 16 bits with saturation and shift the result right by 16. | + | Return a 16 bit result. | + | mac_r(L_var3,var1,var2) = round(L_mac(L_var3,var1,var2)) | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | L_var3 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0x0000 8000 <= L_var_out <= 0x0000 7fff. | + |___________________________________________________________________________| +*/ +Word16 mac_r (Word32 L_var3, Word16 var1, Word16 var2) +{ + Word16 var_out; + + L_var3 = L_mac (L_var3, var1, var2); +#if (WMOPS) + multiCounter[currCounter].L_mac--; +#endif + L_var3 = L_add (L_var3, (Word32) 0x00008000L); +#if (WMOPS) + multiCounter[currCounter].L_add--; +#endif + var_out = extract_h (L_var3); +#if (WMOPS) + multiCounter[currCounter].extract_h--; + multiCounter[currCounter].mac_r++; +#endif + return (var_out); +} +/* ------------------------- End of mac_r() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : msu_r | + | | + | Purpose : | + | | + | Multiply var1 by var2 and shift the result left by 1. Subtract the 32 | + | bit result to L_var3 with saturation. Round the LS 16 bits of the res- | + | ult into the MS 16 bits with saturation and shift the result right by | + | 16. Return a 16 bit result. | + | msu_r(L_var3,var1,var2) = round(L_msu(L_var3,var1,var2)) | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | L_var3 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0x0000 8000 <= L_var_out <= 0x0000 7fff. | + |___________________________________________________________________________| +*/ +Word16 msu_r (Word32 L_var3, Word16 var1, Word16 var2) +{ + Word16 var_out; + + L_var3 = L_msu (L_var3, var1, var2); +#if (WMOPS) + multiCounter[currCounter].L_msu--; +#endif + L_var3 = L_add (L_var3, (Word32) 0x00008000L); +#if (WMOPS) + multiCounter[currCounter].L_add--; +#endif + var_out = extract_h (L_var3); +#if (WMOPS) + multiCounter[currCounter].extract_h--; + multiCounter[currCounter].msu_r++; +#endif + return (var_out); +} +/* ------------------------- End of msu_r() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : L_deposit_h | + | | + | Purpose : | + | | + | Deposit the 16 bit var1 into the 16 MS bits of the 32 bit output. The | + | 16 LS bits of the output are zeroed. | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= var_out <= 0x7fff 0000. | + |___________________________________________________________________________| +*/ +Word32 L_deposit_h (Word16 var1) +{ + Word32 L_var_out; + + L_var_out = (Word32) var1 << 16; +#if (WMOPS) + multiCounter[currCounter].L_deposit_h++; +#endif + return (L_var_out); +} +/* ------------------------- End of L_deposit_h() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : L_deposit_l | + | | + | Purpose : | + | | + | Deposit the 16 bit var1 into the 16 LS bits of the 32 bit output. The | + | 16 MS bits of the output are sign extended. | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0xFFFF 8000 <= var_out <= 0x0000 7fff. | + |___________________________________________________________________________| +*/ +Word32 L_deposit_l (Word16 var1) +{ + Word32 L_var_out; + + L_var_out = (Word32) var1; +#if (WMOPS) + multiCounter[currCounter].L_deposit_l++; +#endif + return (L_var_out); +} +/* ------------------------- End of L_deposit_l() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : L_shr_r | + | | + | Purpose : | + | | + | Same as L_shr(L_var1,var2) but with rounding. Saturate the result in | + | case of underflows or overflows : | + | - If var2 is greater than zero : | + | if (L_sub(L_shl(L_shr(L_var1,var2),1),L_shr(L_var1,sub(var2,1))))| + | is equal to zero | + | then | + | L_shr_r(L_var1,var2) = L_shr(L_var1,var2) | + | else | + | L_shr_r(L_var1,var2) = L_add(L_shr(L_var1,var2),1) | + | - If var2 is less than or equal to zero : | + | L_shr_r(L_var1,var2) = L_shr(L_var1,var2). | + | | + | Complexity weight : 3 | + | | + | Inputs : | + | | + | L_var1 | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= var1 <= 0x7fff ffff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= var_out <= 0x7fff ffff. | + |___________________________________________________________________________| +*/ +Word32 L_shr_r (Word32 L_var1, Word16 var2) +{ + Word32 L_var_out; + + if (var2 > 31) + { + L_var_out = 0; + } + else + { + L_var_out = L_shr (L_var1, var2); +#if (WMOPS) + multiCounter[currCounter].L_shr--; +#endif + if (var2 > 0) + { + if ((L_var1 & ((Word32) 1 << (var2 - 1))) != 0) + { + L_var_out++; + } + } + } +#if (WMOPS) + multiCounter[currCounter].L_shr_r++; +#endif + return (L_var_out); +} +/* ------------------------- End of L_shr_r() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : L_abs | + | | + | Purpose : | + | | + | Absolute value of L_var1; Saturate in case where the input is | + | -214783648 | + | | + | Complexity weight : 3 | + | | + | Inputs : | + | | + | L_var1 | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= var1 <= 0x7fff ffff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x0000 0000 <= var_out <= 0x7fff ffff. | + |___________________________________________________________________________| +*/ +Word32 L_abs (Word32 L_var1) +{ + Word32 L_var_out; + + if (L_var1 == MIN_32) + { + L_var_out = MAX_32; + } + else + { + if (L_var1 < 0) + { + L_var_out = -L_var1; + } + else + { + L_var_out = L_var1; + } + } + +#if (WMOPS) + multiCounter[currCounter].L_abs++; +#endif + return (L_var_out); +} +/* ------------------------- End of L_abs() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : norm_s | + | | + | Purpose : | + | | + | Produces the number of left shift needed to normalize the 16 bit varia- | + | ble var1 for positive values on the interval with minimum of 16384 and | + | maximum of 32767, and for negative values on the interval with minimum | + | of -32768 and maximum of -16384; in order to normalize the result, the | + | following operation must be done : | + | norm_var1 = shl(var1,norm_s(var1)). | + | | + | Complexity weight : 15 | + | | + | Inputs : | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0x0000 0000 <= var_out <= 0x0000 000f. | + |___________________________________________________________________________| +*/ +Word16 norm_s (Word16 var1) +{ + Word16 var_out; + + if (var1 == 0) + { + var_out = 0; + } + else + { + if (var1 == (Word16) 0xffff) + { + var_out = 15; + } + else + { + if (var1 < 0) + { + var1 = ~var1; + } + for (var_out = 0; var1 < 0x4000; var_out++) + { + var1 <<= 1; + } + } + } + +#if (WMOPS) + multiCounter[currCounter].norm_s++; +#endif + return (var_out); +} +/* ------------------------- End of norm_s() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : div_s | + | | + | Purpose : | + | | + | Produces a result which is the fractional integer division of var1 by | + | var2; var1 and var2 must be positive and var2 must be greater or equal | + | to var1; the result is positive (leading bit equal to 0) and truncated | + | to 16 bits. | + | If var1 = var2 then div(var1,var2) = 32767. | + | | + | Complexity weight : 18 | + | | + | Inputs : | + | | + | var1 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0x0000 0000 <= var1 <= var2 and var2 != 0. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : var1 <= var2 <= 0x0000 7fff and var2 != 0. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0x0000 0000 <= var_out <= 0x0000 7fff. | + | It's a Q15 value (point between b15 and b14). | + |___________________________________________________________________________| +*/ +Word16 div_s (Word16 var1, Word16 var2) +{ + Word16 var_out = 0; + Word16 iteration; + Word32 L_num; + Word32 L_denom; + + if ((var1 > var2) || (var1 < 0) || (var2 < 0)) + { + printf ("Division Error var1=%d var2=%d\n", var1, var2); + abort(); /* exit (0); */ + } + if (var2 == 0) + { + printf ("Division by 0, Fatal error \n"); + abort(); /* exit (0); */ + } + if (var1 == 0) + { + var_out = 0; + } + else + { + if (var1 == var2) + { + var_out = MAX_16; + } + else + { + L_num = L_deposit_l (var1); +#if (WMOPS) + multiCounter[currCounter].L_deposit_l--; +#endif + L_denom = L_deposit_l (var2); +#if (WMOPS) + multiCounter[currCounter].L_deposit_l--; +#endif + + for (iteration = 0; iteration < 15; iteration++) + { + var_out <<= 1; + L_num <<= 1; + + if (L_num >= L_denom) + { + L_num = L_sub (L_num, L_denom); +#if (WMOPS) + multiCounter[currCounter].L_sub--; +#endif + var_out = add (var_out, 1); +#if (WMOPS) + multiCounter[currCounter].add--; +#endif + } + } + } + } + +#if (WMOPS) + multiCounter[currCounter].div_s++; +#endif + return (var_out); +} +/* ------------------------- End of div_s() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : norm_l | + | | + | Purpose : | + | | + | Produces the number of left shifts needed to normalize the 32 bit varia-| + | ble L_var1 for positive values on the interval with minimum of | + | 1073741824 and maximum of 2147483647, and for negative values on the in-| + | terval with minimum of -2147483648 and maximum of -1073741824; in order | + | to normalize the result, the following operation must be done : | + | norm_L_var1 = L_shl(L_var1,norm_l(L_var1)). | + | | + | Complexity weight : 30 | + | | + | Inputs : | + | | + | L_var1 | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= var1 <= 0x7fff ffff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0x0000 0000 <= var_out <= 0x0000 001f. | + |___________________________________________________________________________| +*/ +Word16 norm_l (Word32 L_var1) +{ + Word16 var_out; + + if (L_var1 == 0) + { + var_out = 0; + } + else + { + if (L_var1 == (Word32) 0xffffffffL) + { + var_out = 31; + } + else + { + if (L_var1 < 0) + { + L_var1 = ~L_var1; + } + for (var_out = 0; L_var1 < (Word32) 0x40000000L; var_out++) + { + L_var1 <<= 1; + } + } + } + +#if (WMOPS) + multiCounter[currCounter].norm_l++; +#endif + return (var_out); +} +/* ------------------------- End of norm_l() ------------------------- */ + + +/* + ***************************************************************** + Additional operators extracted from the G.723.1 Library + Adapted for WMOPS calculations + ***************************************************************** +*/ + +/*___________________________________________________________________________ + | | + | Function Name : L_mls | + | | + | Purpose : | + | | + | Multiplies a 16 bit word v by a 32 bit word Lv and returns a 32 bit | + | word (multiplying 16 by 32 bit words gives 48 bit word; the function | + | extracts the 32 MSB and shift the result to the left by 1). | + | | + | A 32 bit word can be written as | + | Lv = a + b * 2^16 | + | where a= unsigned 16 LSBs and b= signed 16 MSBs. | + | The function returns v * Lv / 2^15 which is equivalent to | + | a*v / 2^15 + b*v*2 | + | | + | Complexity weight : 6 [to be confirmed] | + | | + | Inputs : | + | | + | Lv | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= var1 <= 0x7fff ffff. | + | v | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0x8000 <= var1 <= 0x7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= var_out <= 0x7fff ffff. | + | | + |___________________________________________________________________________| +*/ +Word32 L_mls (Word32 Lv, Word16 v) +{ + Word32 Temp ; + + Temp = Lv & (Word32) 0x0000ffff ; + Temp = Temp * (Word32) v ; + Temp = L_shr_nocheck( Temp, (Word16) 15 ) ; + Temp = L_mac( Temp, v, extract_h(Lv) ) ; + +#if (WMOPS) + multiCounter[currCounter].L_shr--; + multiCounter[currCounter].L_mac--; + multiCounter[currCounter].extract_h--; + multiCounter[currCounter].L_mls++; +#endif + + return Temp ; +} +/* ------------------------- End of L_mls() ------------------------- */ + + +/*__________________________________________________________________________ +| | +| Function Name : div_l | +| | +| Purpose : | +| | +| Produces a result which is the fractional integer division of L_var1 by| +| var2; L_var1 and var2 must be positive and var2 << 16 must be greater or| +| equal to L_var1; the result is positive (leading bit equal to 0) and | +| truncated to 16 bits. | +| If L_var1 == var2 << 16 then div_l(L_var1,var2) = 32767. | +| | +| Complexity weight : 20 | +| | +| Inputs : | +| | +| L_var1 | +| 32 bit long signed integer (Word32) whose value falls in the | +| range : 0x0000 0000 <= var1 <= (var2 << 16) and var2 != 0. | +| L_var1 must be considered as a Q.31 value | +| | +| var2 | +| 16 bit short signed integer (Word16) whose value falls in the | +| range : var1 <= (var2<< 16) <= 0x7fff0000 and var2 != 0. | +| var2 must be considered as a Q.15 value | +| | +| Outputs : | +| | +| none | +| | +| Return Value : | +| | +| var_out | +| 16 bit short signed integer (Word16) whose value falls in the | +| range : 0x0000 0000 <= var_out <= 0x0000 7fff. | +| It's a Q15 value (point between b15 and b14). | +|___________________________________________________________________________| +*/ +Word16 div_l (Word32 L_num, Word16 den) +{ + Word16 var_out = (Word16)0; + Word32 L_den; + Word16 iteration; + +#if (WMOPS) + multiCounter[currCounter].div_l++; +#endif + + if ( den == (Word16) 0 ) { + printf("Division by 0 in div_l, Fatal error \n"); + exit(0); + } + + if ( (L_num < (Word32) 0) || (den < (Word16) 0) ) { + printf("Division Error in div_l, Fatal error \n"); + exit(0); + } + + L_den = L_deposit_h( den ) ; +#if (WMOPS) + multiCounter[currCounter].L_deposit_h--; +#endif + + if ( L_num >= L_den ){ + return MAX_16 ; + } + else { + L_num = L_shr_nocheck(L_num, (Word16)1) ; + L_den = L_shr_nocheck(L_den, (Word16)1); +#if (WMOPS) + multiCounter[currCounter].L_shr-=2; +#endif + for(iteration=(Word16)0; iteration< (Word16)15;iteration++) { + var_out = shl_nocheck( var_out, (Word16)1); + L_num = L_shl_nocheck( L_num, (Word16)1); +#if (WMOPS) + multiCounter[currCounter].shl--; + multiCounter[currCounter].L_shl--; +#endif + if (L_num >= L_den) { + L_num = L_sub(L_num,L_den); + var_out = add(var_out, (Word16)1); +#if (WMOPS) + multiCounter[currCounter].L_sub--; + multiCounter[currCounter].add--; +#endif + } + } + + return var_out; + } +} +/* ------------------------- End of div_l() ------------------------- */ + + +/*__________________________________________________________________________ +| | +| Function Name : i_mult | +| | +| Purpose : | +| | +| Integer 16-bit multiplication. No overflow protection is performed if | +| ORIGINAL_G7231 is defined. | +| | +| Complexity weight : TBD | +| | +| Inputs : | +| | +| a | +| 16 bit short signed integer (Word16). | +| | +| b | +| 16 bit short signed integer (Word16). | +| | +| Outputs : | +| | +| none | +| | +| Return Value : | +| | +| 16 bit short signed integer (Word16). No overflow checks | +| are performed if ORIGINAL_G7231 is defined. | +|___________________________________________________________________________| +*/ +Word16 i_mult (Word16 a, Word16 b) +{ +#ifdef ORIGINAL_G7231 + return a*b ; +#else + Word32 register c=a*b; +#if (WMOPS) + multiCounter[currCounter].i_mult++; +#endif + return saturate(c) ; +#endif +} +/* ------------------------- End of i_mult() ------------------------- */ + + +/* + ********************************************************************** + The following three operators are not part of the original + G.729/G.723.1 set of basic operators and implement shiftless + accumulation operation. + ********************************************************************** +*/ + +/*___________________________________________________________________________ + | + | Function Name : L_mult0 + | + | Purpose : + | + | L_mult0 is the 32 bit result of the multiplication of var1 times var2 + | without one left shift. + | + | Complexity weight : 1 + | + | Inputs : + | + | var1 16 bit short signed integer (Word16) whose value falls in the + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. + | + | var2 16 bit short signed integer (Word16) whose value falls in the + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. + | + | Return Value : + | + | L_var_out + | 32 bit long signed integer (Word32) whose value falls in the + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. + |___________________________________________________________________________ +*/ +Word32 L_mult0 (Word16 var1,Word16 var2) +{ + Word32 L_var_out; + + L_var_out = (Word32)var1 * (Word32)var2; + +#if (WMOPS) + multiCounter[currCounter].L_mult0++; +#endif + return(L_var_out); +} +/* ------------------------- End of L_mult0() ------------------------- */ + + +/*___________________________________________________________________________ + | + | Function Name : L_mac0 + | + | Purpose : + | + | Multiply var1 by var2 (without left shift) and add the 32 bit result to + | L_var3 with saturation, return a 32 bit result: + | L_mac0(L_var3,var1,var2) = L_add(L_var3,(L_mult0(var1,var2)). + | + | Complexity weight : 1 + | + | Inputs : + | + | L_var3 32 bit long signed integer (Word32) whose value falls in the + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. + | + | var1 16 bit short signed integer (Word16) whose value falls in the + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. + | + | var2 16 bit short signed integer (Word16) whose value falls in the + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. + | + | Return Value : + | + | L_var_out + | 32 bit long signed integer (Word32) whose value falls in the + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. + |___________________________________________________________________________ +*/ +Word32 L_mac0 (Word32 L_var3, Word16 var1, Word16 var2) +{ + Word32 L_var_out; + Word32 L_product; + + L_product = L_mult0(var1,var2); + L_var_out = L_add(L_var3,L_product); + +#if (WMOPS) + multiCounter[currCounter].L_mac0++; + multiCounter[currCounter].L_mult0--; + multiCounter[currCounter].L_add--; +#endif + return(L_var_out); +} +/* ------------------------- End of L_mac0() ------------------------- */ + + +/*___________________________________________________________________________ + | + | Function Name : L_msu0 + | + | Purpose : + | + | Multiply var1 by var2 (without left shift) and subtract the 32 bit + | result to L_var3 with saturation, return a 32 bit result: + | L_msu0(L_var3,var1,var2) = L_sub(L_var3,(L_mult0(var1,var2)). + | + | Complexity weight : 1 + | + | Inputs : + | + | L_var3 32 bit long signed integer (Word32) whose value falls in the + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. + | + | var1 16 bit short signed integer (Word16) whose value falls in the + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. + | + | var2 16 bit short signed integer (Word16) whose value falls in the + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. + | + | Return Value : + | + | L_var_out + | 32 bit long signed integer (Word32) whose value falls in the + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. + |___________________________________________________________________________ +*/ +Word32 L_msu0 (Word32 L_var3, Word16 var1, Word16 var2) +{ + Word32 L_var_out; + Word32 L_product; + + L_product = L_mult0(var1,var2); + L_var_out = L_sub(L_var3,L_product); + +#if (WMOPS) + multiCounter[currCounter].L_msu0++; + multiCounter[currCounter].L_mult0--; + multiCounter[currCounter].L_sub--; +#endif + return(L_var_out); +} +/* ------------------------- End of L_msu0() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : LU_shl | + | | + | Purpose : | + | | + | Arithmetically shift the 32 bit input L_var1 left var2 positions. Zero | + | fill the var2 LSB of the result. If var2 is negative, arithmetically | + | shift L_var1 right by -var2 with sign extension. Saturate the result in | + | case of underflows or overflows. | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | L_var1 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. | + |___________________________________________________________________________| +*/ +UWord32 LU_shl (UWord32 L_var1, Word16 var2) +{ + Word16 neg_var2; + UWord32 L_var_out; + + if (var2 <= 0) + { + if (var2 < -32) + var2 = -32; + neg_var2 = negate(var2); + L_var_out = LU_shr (L_var1, neg_var2); +#if (WMOPS) + multiCounter[currCounter].negate--; + multiCounter[currCounter].LU_shr--; +#endif + } + else + { + for (; var2 > 0; var2--) + { + if (L_var1 > (UWord32) 0X7fffffffL) + { + SET_OVERFLOW(1); + L_var_out = UMAX_32; + break; + } + else + { + if (L_var1 < (UWord32) 0x00000001L) + { + SET_OVERFLOW(1); + L_var_out = MIN_32; + break; + } + } + L_var1 *= 2; + L_var_out = L_var1; + } + } +#if (WMOPS) + multiCounter[currCounter].LU_shl++; +#endif + return (L_var_out); +} +/* ------------------------- End of LU_shl() ------------------------- */ + + +/*___________________________________________________________________________ + | | + | Function Name : LU_shr | + | | + | Purpose : | + | | + | Arithmetically shift the 32 bit input L_var1 right var2 positions with | + | sign extension. If var2 is negative, arithmetically shift L_var1 left | + | by -var2 and zero fill the -var2 LSB of the result. Saturate the result | + | in case of underflows or overflows. | + | | + | Complexity weight : 2 | + | | + | Inputs : | + | | + | L_var1 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. | + | | + | var2 | + | 16 bit short signed integer (Word16) whose value falls in the | + | range : 0xffff 8000 <= var1 <= 0x0000 7fff. | + | | + | Outputs : | + | | + | none | + | | + | Return Value : | + | | + | L_var_out | + | 32 bit long signed integer (Word32) whose value falls in the | + | range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. | + |___________________________________________________________________________| +*/ +UWord32 LU_shr (UWord32 L_var1, Word16 var2) +{ + Word16 neg_var2; + UWord32 L_var_out; + + if (var2 < 0) + { + if (var2 < -32) + var2 = -32; + neg_var2 = negate(var2); + L_var_out = LU_shl (L_var1, neg_var2); +#if (WMOPS) + multiCounter[currCounter].negate--; + multiCounter[currCounter].LU_shl--; +#endif + } + else + { + if (var2 >= 32) + { + L_var_out = 0L; + } + else + { + L_var_out = L_var1 >> var2; + } + } +#if (WMOPS) + multiCounter[currCounter].LU_shr++; +#endif + return (L_var_out); +} +/* ------------------------- End of LU_shr() ------------------------- */ + + +/* ************************** END OF BASOP32.C ************************** */ |