Leaving just libcelt

libcelt/tests/mathops-test.c

@@ -0,0 +1,172 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "mathops.c"
+#include "entcode.c"
+#include <stdio.h>
+#include <math.h>
+
+#ifdef FIXED_POINT
+#define WORD "%d"
+#else
+#define WORD "%f"
+#endif
+
+#ifdef FIXED_DEBUG  
+long long celt_mips=0;
+#endif
+int ret = 0;
+
+void testdiv(void)
+{
+   celt_int32 i;
+   for (i=1;i<=327670;i++)
+   {
+      double prod;
+      celt_word32 val;
+      val = celt_rcp(i);
+#ifdef FIXED_POINT
+      prod = (1./32768./65526.)*val*i;
+#else
+      prod = val*i;
+#endif
+      if (fabs(prod-1) > .00025)
+      {
+         fprintf (stderr, "div failed: 1/%d="WORD" (product = %f)\n", i, val, prod);
+         ret = 1;
+      }
+   }
+}
+
+void testsqrt(void)
+{
+   celt_int32 i;
+   for (i=1;i<=1000000000;i++)
+   {
+      double ratio;
+      celt_word16 val;
+      val = celt_sqrt(i);
+      ratio = val/sqrt(i);
+      if (fabs(ratio - 1) > .0005 && fabs(val-sqrt(i)) > 2)
+      {
+         fprintf (stderr, "sqrt failed: sqrt(%d)="WORD" (ratio = %f)\n", i, val, ratio);
+         ret = 1;
+      }
+      i+= i>>10;
+   }
+}
+
+#ifndef FIXED_POINT
+void testlog2(void)
+{
+   float x;
+   for (x=0.001;x<1677700.0;x+=(x/8.0))
+   {
+      float error = fabs((1.442695040888963387*log(x))-celt_log2(x));
+      if (error>0.0009)
+      {
+         fprintf (stderr, "celt_log2 failed: fabs((1.442695040888963387*log(x))-celt_log2(x))>0.001 (x = %f, error = %f)\n", x,error);
+         ret = 1;    
+      }
+   }
+}
+
+void testexp2(void)
+{
+   float x;
+   for (x=-11.0;x<24.0;x+=0.0007)
+   {
+      float error = fabs(x-(1.442695040888963387*log(celt_exp2(x))));
+      if (error>0.0002)
+      {
+         fprintf (stderr, "celt_exp2 failed: fabs(x-(1.442695040888963387*log(celt_exp2(x))))>0.0005 (x = %f, error = %f)\n", x,error);
+         ret = 1;    
+      }
+   }
+}
+
+void testexp2log2(void)
+{
+   float x;
+   for (x=-11.0;x<24.0;x+=0.0007)
+   {
+      float error = fabs(x-(celt_log2(celt_exp2(x))));
+      if (error>0.001)
+      {
+         fprintf (stderr, "celt_log2/celt_exp2 failed: fabs(x-(celt_log2(celt_exp2(x))))>0.001 (x = %f, error = %f)\n", x,error);
+         ret = 1;    
+      }
+   }
+}
+#else
+void testlog2(void)
+{
+   celt_word32 x;
+   for (x=8;x<1073741824;x+=(x>>3))
+   {
+      float error = fabs((1.442695040888963387*log(x/16384.0))-celt_log2(x)/1024.0);
+      if (error>0.003)
+      {
+         fprintf (stderr, "celt_log2 failed: x = %ld, error = %f\n", (long)x,error);
+         ret = 1;
+      }
+   }
+}
+
+void testexp2(void)
+{
+   celt_word16 x;
+   for (x=-32768;x<-30720;x++)
+   {
+      float error1 = fabs(x/2048.0-(1.442695040888963387*log(celt_exp2(x)/65536.0)));
+      float error2 = fabs(exp(0.6931471805599453094*x/2048.0)-celt_exp2(x)/65536.0);
+      if (error1>0.0002&&error2>0.00004)
+      {
+         fprintf (stderr, "celt_exp2 failed: x = "WORD", error1 = %f, error2 = %f\n", x,error1,error2);
+         ret = 1;
+      }
+   }
+}
+
+void testexp2log2(void)
+{
+   celt_word32 x;
+   for (x=8;x<65536;x+=(x>>3))
+   {
+      float error = fabs(x-0.25*celt_exp2(celt_log2(x)<<1))/16384;
+      if (error>0.004)
+      {
+         fprintf (stderr, "celt_log2/celt_exp2 failed: fabs(x-(celt_exp2(celt_log2(x))))>0.001 (x = %ld, error = %f)\n", (long)x,error);
+         ret = 1;
+      }
+   }
+}
+
+void testilog2(void)
+{
+   celt_word32 x;
+   for (x=1;x<=268435455;x+=127)
+   {
+      celt_word32 error = abs(celt_ilog2(x)-(int)floor(log2(x)));
+      if (error!=0)
+      {
+         printf("celt_ilog2 failed: celt_ilog2(x)!=floor(log2(x)) (x = %d, error = %d)\n",x,error);
+         ret = 1;
+      }
+   }
+}
+#endif
+
+int main(void)
+{
+   testdiv();
+   testsqrt();
+   testlog2();
+   testexp2();
+   testexp2log2();
+#ifdef FIXED_POINT
+   testilog2();
+#endif
+   return ret;
+}