From 6f0ba39ae599528a0eebf43363b9b4582e233096 Mon Sep 17 00:00:00 2001
From: Mark Spencer <markster@digium.com>
Date: Wed, 5 Jan 2000 08:20:27 +0000
Subject: Version 0.1.2 from FTP

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@169 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 codecs/lpc10/energy.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100755 codecs/lpc10/energy.c

(limited to 'codecs/lpc10/energy.c')

diff --git a/codecs/lpc10/energy.c b/codecs/lpc10/energy.c
new file mode 100755
index 000000000..2091a0133
--- /dev/null
+++ b/codecs/lpc10/energy.c
@@ -0,0 +1,91 @@
+/*
+
+$Log$
+Revision 1.1  2000/01/05 08:20:39  markster
+Version 0.1.2 from FTP
+
+Revision 1.2  2000/01/05 08:20:39  markster
+Some OSS fixes and a few lpc changes to make it actually work
+
+ * Revision 1.1  1996/08/19  22:32:17  jaf
+ * Initial revision
+ *
+
+*/
+
+#ifdef P_R_O_T_O_T_Y_P_E_S
+extern int energy_(integer *len, real *speech, real *rms);
+#endif
+
+/*  -- translated by f2c (version 19951025).
+   You must link the resulting object file with the libraries:
+	-lf2c -lm   (in that order)
+*/
+
+#include "f2c.h"
+
+/* ********************************************************************* */
+
+/* 	ENERGY Version 50 */
+
+/* $Log$
+ * Revision 1.1  2000/01/05 08:20:39  markster
+ * Version 0.1.2 from FTP
+ *
+/* Revision 1.2  2000/01/05 08:20:39  markster
+/* Some OSS fixes and a few lpc changes to make it actually work
+/*
+ * Revision 1.1  1996/08/19  22:32:17  jaf
+ * Initial revision
+ * */
+/* Revision 1.3  1996/03/18  21:17:41  jaf */
+/* Just added a few comments about which array indices of the arguments */
+/* are used, and mentioning that this subroutine has no local state. */
+
+/* Revision 1.2  1996/03/13  16:46:02  jaf */
+/* Comments added explaining that none of the local variables of this */
+/* subroutine need to be saved from one invocation to the next. */
+
+/* Revision 1.1  1996/02/07 14:45:40  jaf */
+/* Initial revision */
+
+
+/* ********************************************************************* */
+
+/* Compute RMS energy. */
+
+/* Input: */
+/*  LEN    - Length of speech buffer */
+/*  SPEECH - Speech buffer */
+/*           Indices 1 through LEN read. */
+/* Output: */
+/*  RMS    - Root Mean Square energy */
+
+/* This subroutine has no local state. */
+
+/* Subroutine */ int energy_(integer *len, real *speech, real *rms)
+{
+    /* System generated locals */
+    integer i__1;
+
+    /* Builtin functions */
+    double sqrt(doublereal);
+
+    /* Local variables */
+    integer i__;
+
+/*       Arguments */
+/*       Local variables that need not be saved */
+    /* Parameter adjustments */
+    --speech;
+
+    /* Function Body */
+    *rms = 0.f;
+    i__1 = *len;
+    for (i__ = 1; i__ <= i__1; ++i__) {
+	*rms += speech[i__] * speech[i__];
+    }
+    *rms = sqrt(*rms / *len);
+    return 0;
+} /* energy_ */
+
-- 
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