shithub: opus

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Fixes the celt_exp2() test (not the function, the test itself)

Was previously testing only far on the negative side and using
the wrong scaling factor

--- a/libcelt/tests/mathops-test.c

+++ b/libcelt/tests/mathops-test.c

@@ -117,13 +117,13 @@

 void testexp2(void)

 {

    opus_val16 x;

-   for (x=-32768;x<-30720;x++)

+   for (x=-32768;x<15360;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);

+      float error1 = fabs(x/1024.0-(1.442695040888963387*log(celt_exp2(x)/65536.0)));

+      float error2 = fabs(exp(0.6931471805599453094*x/1024.0)-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);

+    	 fprintf (stderr, "celt_exp2 failed: x = "WORD", error1 = %f, error2 = %f\n", x,error1,error2);

          ret = 1;

       }

    }