OpenE2K
/
glibc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Update. 

2000-12-20  Ulrich Drepper  <drepper@redhat.com>

	* math/test-misc.c: Add more tests for nextafter functions.

	* sysdeps/i386/fpu/s_nextafterl.c: Handle change from denormal to
	normal correctly.  Correct test for sign.
	Based on a patch by HJ Lu.
This commit is contained in:
Ulrich Drepper 2000-12-21 04:17:49 +00:00
parent 0a4c7b18e2
commit ddc3ed9d3d
3 changed files with 169 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
ChangeLog
View File

@ -1,3 +1,11 @@
2000-12-20 Ulrich Drepper <drepper@redhat.com>
* math/test-misc.c: Add more tests for nextafter functions.
* sysdeps/i386/fpu/s_nextafterl.c: Handle change from denormal to
normal correctly. Correct test for sign.
Based on a patch by HJ Lu.
2000-12-19 Ulrich Drepper <drepper@redhat.com>
* Makeconfig (preprocess-version): Add -traditional to gcc call.

169
math/test-misc.c
View File

@ -18,6 +18,7 @@
Boston, MA 02111-1307, USA. */
#include <fenv.h>
#include <ieee754.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
@ -115,9 +116,11 @@ main (void)
}
{
union ieee754_float v1;
union ieee754_float v2;
float f;
f = FLT_MIN;
v1.f = f = FLT_MIN;
if (fpclassify (f) != FP_NORMAL)
{
printf ("fpclassify (FLT_MIN) failed: %d\n", fpclassify (f));
@ -129,7 +132,7 @@ main (void)
printf ("fpclassify (FLT_MIN-epsilon) failed: %d\n", fpclassify (f));
result = 1;
}
f = nextafterf (f, FLT_MIN);
v2.f = f = nextafterf (f, FLT_MIN);
if (fpclassify (f) != FP_NORMAL)
{
printf ("fpclassify (FLT_MIN-epsilon+epsilon) failed: %d\n",
@ -137,7 +140,26 @@ main (void)
result = 1;
}
f = -FLT_MIN;
if (v1.ieee.mantissa != v2.ieee.mantissa)
{
printf ("FLT_MIN: mantissa differs: %8x vs %8x\n",
v1.ieee.mantissa, v2.ieee.mantissa);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("FLT_MIN: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("FLT_MIN: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.f = f = -FLT_MIN;
if (fpclassify (f) != FP_NORMAL)
{
printf ("fpclassify (-FLT_MIN) failed: %d\n", fpclassify (f));
@ -149,7 +171,7 @@ main (void)
printf ("fpclassify (-FLT_MIN-epsilon) failed: %d\n", fpclassify (f));
result = 1;
}
f = nextafterf (f, -FLT_MIN);
v2.f = f = nextafterf (f, -FLT_MIN);
if (fpclassify (f) != FP_NORMAL)
{
printf ("fpclassify (-FLT_MIN-epsilon+epsilon) failed: %d\n",
@ -157,6 +179,25 @@ main (void)
result = 1;
}
if (v1.ieee.mantissa != v2.ieee.mantissa)
{
printf ("-FLT_MIN: mantissa differs: %8x vs %8x\n",
v1.ieee.mantissa, v2.ieee.mantissa);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("-FLT_MIN: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("-FLT_MIN: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
f = FLT_MAX;
if (fpclassify (f) != FP_NORMAL)
{
@ -184,9 +225,11 @@ main (void)
}
}
{
union ieee754_double v1;
union ieee754_double v2;
double d;
d = DBL_MIN;
v1.d = d = DBL_MIN;
if (fpclassify (d) != FP_NORMAL)
{
printf ("fpclassify (DBL_MIN) failed: %d\n", fpclassify (d));
@ -198,7 +241,7 @@ main (void)
printf ("fpclassify (DBL_MIN-epsilon) failed: %d\n", fpclassify (d));
result = 1;
}
d = nextafter (d, DBL_MIN);
v2.d = d = nextafter (d, DBL_MIN);
if (fpclassify (d) != FP_NORMAL)
{
printf ("fpclassify (DBL_MIN-epsilon+epsilon) failed: %d\n",
@ -206,7 +249,32 @@ main (void)
result = 1;
}
d = -DBL_MIN;
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("DBL_MIN: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("DBL_MIN: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("DBL_MIN: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("DBL_MIN: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = d = -DBL_MIN;
if (fpclassify (d) != FP_NORMAL)
{
printf ("fpclassify (-DBL_MIN) failed: %d\n", fpclassify (d));
@ -218,7 +286,7 @@ main (void)
printf ("fpclassify (-DBL_MIN-epsilon) failed: %d\n", fpclassify (d));
result = 1;
}
d = nextafter (d, -DBL_MIN);
v2.d = d = nextafter (d, -DBL_MIN);
if (fpclassify (d) != FP_NORMAL)
{
printf ("fpclassify (-DBL_MIN-epsilon+epsilon) failed: %d\n",
@ -226,6 +294,31 @@ main (void)
result = 1;
}
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("-DBL_MIN: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("-DBL_MIN: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("-DBL_MIN: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("-DBL_MIN: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
d = DBL_MAX;
if (fpclassify (d) != FP_NORMAL)
{
@ -254,9 +347,11 @@ main (void)
}
#ifndef NO_LONG_DOUBLE
{
union ieee854_long_double v1;
union ieee854_long_double v2;
long double ld;
ld = LDBL_MIN;
v1.d = ld = LDBL_MIN;
if (fpclassify (ld) != FP_NORMAL)
{
printf ("fpclassify (LDBL_MIN) failed: %d\n", fpclassify (ld));
@ -269,7 +364,7 @@ main (void)
fpclassify (ld), ld);
result = 1;
}
ld = nextafterl (ld, LDBL_MIN);
v2.d = ld = nextafterl (ld, LDBL_MIN);
if (fpclassify (ld) != FP_NORMAL)
{
printf ("fpclassify (LDBL_MIN-epsilon+epsilon) failed: %d (%La)\n",
@ -277,7 +372,32 @@ main (void)
result = 1;
}
ld = -LDBL_MIN;
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("LDBL_MIN: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("LDBL_MIN: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("LDBL_MIN: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("LDBL_MIN: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = ld = -LDBL_MIN;
if (fpclassify (ld) != FP_NORMAL)
{
printf ("fpclassify (-LDBL_MIN) failed: %d\n", fpclassify (ld));
@ -290,7 +410,7 @@ main (void)
fpclassify (ld), ld);
result = 1;
}
ld = nextafterl (ld, -LDBL_MIN);
v2.d = ld = nextafterl (ld, -LDBL_MIN);
if (fpclassify (ld) != FP_NORMAL)
{
printf ("fpclassify (-LDBL_MIN-epsilon+epsilon) failed: %d (%La)\n",
@ -298,6 +418,31 @@ main (void)
result = 1;
}
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("-LDBL_MIN: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("-LDBL_MIN: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("-LDBL_MIN: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("-LDBL_MIN: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
ld = LDBL_MAX;
if (fpclassify (ld) != FP_NORMAL)
{

7
sysdeps/i386/fpu/s_nextafterl.c
View File

@ -56,7 +56,7 @@ static char rcsid[] = "$NetBSD: $";
y = x*x;
if(y==x) return y; else return x; /* raise underflow flag */
}
if(esx<0x8000) { /* x > 0 */
if(esx>=0) { /* x > 0 */
if(ix>iy||((ix==iy) && (hx>hy||((hx==hy)&&(lx>ly))))) {
/* x > y, x -= ulp */
if(lx==0) {
@ -77,7 +77,7 @@ static char rcsid[] = "$NetBSD: $";
lx += 1;
if(lx==0) {
hx += 1;
if (hx==0)
if (hx==0 || (esx == 0 && hx == 0x80000000))
esx += 1;
}
}
@ -102,7 +102,8 @@ static char rcsid[] = "$NetBSD: $";
lx += 1;
if(lx==0) {
hx += 1;
if (hx==0) esx += 1;
if (hx==0 || (esx == 0xffff8000 && hx == 0x80000000))
esx += 1;
}
}
}