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Add test for nextafter and 0.0.

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This commit is contained in:
Ulrich Drepper
2000-12-21 08:09:22 +00:00
parent ddc3ed9d3d
commit e3bb40e6bf
2 changed files with 498 additions and 6 deletions
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488
math/test-misc.c
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@ -223,7 +223,146 @@ main (void)
printf ("fpclassify (-FLT_MAX-epsilon) failed: %d\n", fpclassify (f));
result = 1;
}
v1.f = f = 0.0625;
f = nextafterf (f, 0.0);
v2.f = f = nextafterf (f, 1.0);
if (v1.ieee.mantissa != v2.ieee.mantissa)
{
printf ("0.0625f down: mantissa differs: %8x vs %8x\n",
v1.ieee.mantissa, v2.ieee.mantissa);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0625f down: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("0.0625f down: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.f = f = 0.0625;
f = nextafterf (f, 1.0);
v2.f = f = nextafterf (f, 0.0);
if (v1.ieee.mantissa != v2.ieee.mantissa)
{
printf ("0.0625f up: mantissa differs: %8x vs %8x\n",
v1.ieee.mantissa, v2.ieee.mantissa);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0625f up: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("0.0625f up: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.f = f = -0.0625;
f = nextafterf (f, 0.0);
v2.f = f = nextafterf (f, -1.0);
if (v1.ieee.mantissa != v2.ieee.mantissa)
{
printf ("-0.0625f up: mantissa differs: %8x vs %8x\n",
v1.ieee.mantissa, v2.ieee.mantissa);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("-0.0625f up: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("-0.0625f up: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.f = f = -0.0625;
f = nextafterf (f, -1.0);
v2.f = f = nextafterf (f, 0.0);
if (v1.ieee.mantissa != v2.ieee.mantissa)
{
printf ("-0.0625f down: mantissa differs: %8x vs %8x\n",
v1.ieee.mantissa, v2.ieee.mantissa);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("-0.0625f down: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("-0.0625f down: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.f = f = 0.0f;
f = nextafterf (f, 1.0);
v2.f = nextafterf (f, -1.0);
if (v1.ieee.mantissa != v2.ieee.mantissa)
{
printf ("0.0f up: mantissa differs: %8x vs %8x\n",
v1.ieee.mantissa, v2.ieee.mantissa);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0f up: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (0 != v2.ieee.negative)
{
printf ("0.0f up: negative differs: 0 vs %d\n",
v2.ieee.negative);
result = 1;
}
v1.f = f = 0.0f;
f = nextafterf (f, -1.0);
v2.f = nextafterf (f, 1.0);
if (v1.ieee.mantissa != v2.ieee.mantissa)
{
printf ("0.0f down: mantissa differs: %8x vs %8x\n",
v1.ieee.mantissa, v2.ieee.mantissa);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0f down: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (1 != v2.ieee.negative)
{
printf ("0.0f down: negative differs: 1 vs %d\n",
v2.ieee.negative);
result = 1;
}
}
{
union ieee754_double v1;
union ieee754_double v2;
@ -344,7 +483,182 @@ main (void)
printf ("fpclassify (-DBL_MAX-epsilon) failed: %d\n", fpclassify (d));
result = 1;
}
v1.d = d = 0.0625;
d = nextafter (d, 0.0);
v2.d = d = nextafter (d, 1.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("0.0625 down: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("0.0625 down: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0625 down: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("0.0625 down: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = d = 0.0625;
d = nextafter (d, 1.0);
v2.d = d = nextafter (d, 0.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("0.0625 up: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("0.0625 up: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0625 up: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("0.0625 up: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = d = -0.0625;
d = nextafter (d, 0.0);
v2.d = d = nextafter (d, -1.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("-0.0625 up: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("-0.0625 up: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("-0.0625 up: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("-0.0625 up: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = d = -0.0625;
d = nextafter (d, -1.0);
v2.d = d = nextafter (d, 0.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("-0.0625 down: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("-0.0625 down: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("-0.0625 down: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("-0.0625 down: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = d = 0.0;
d = nextafter (d, 1.0);
v2.d = nextafter (d, -1.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("0.0 up: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("0.0 up: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0 up: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (0 != v2.ieee.negative)
{
printf ("0.0 up: negative differs: 0 vs %d\n",
v2.ieee.negative);
result = 1;
}
v1.d = d = 0.0;
d = nextafter (d, -1.0);
v2.d = nextafter (d, 1.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("0.0 down: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("0.0 down: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0 down: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (1 != v2.ieee.negative)
{
printf ("0.0 down: negative differs: 1 vs %d\n",
v2.ieee.negative);
result = 1;
}
}
#ifndef NO_LONG_DOUBLE
{
union ieee854_long_double v1;
@ -469,6 +783,180 @@ main (void)
fpclassify (ld));
result = 1;
}
v1.d = ld = 0.0625;
ld = nextafterl (ld, 0.0);
v2.d = ld = nextafterl (ld, 1.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("0.0625L down: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("0.0625L down: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0625L down: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("0.0625L down: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = ld = 0.0625;
ld = nextafterl (ld, 1.0);
v2.d = ld = nextafterl (ld, 0.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("0.0625L up: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("0.0625L up: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0625L up: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("0.0625L up: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = ld = -0.0625;
ld = nextafterl (ld, 0.0);
v2.d = ld = nextafterl (ld, -1.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("-0.0625L up: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("-0.0625L up: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("-0.0625L up: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("-0.0625L up: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = ld = -0.0625;
ld = nextafterl (ld, -1.0);
v2.d = ld = nextafterl (ld, 0.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("-0.0625L down: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("-0.0625L down: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("-0.0625L down: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (v1.ieee.negative != v2.ieee.negative)
{
printf ("-0.0625L down: negative differs: %d vs %d\n",
v1.ieee.negative, v2.ieee.negative);
result = 1;
}
v1.d = ld = 0.0;
ld = nextafterl (ld, 1.0);
v2.d = nextafterl (ld, -1.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("0.0L up: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("0.0L up: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0L up: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (0 != v2.ieee.negative)
{
printf ("0.0L up: negative differs: 0 vs %d\n",
v2.ieee.negative);
result = 1;
}
v1.d = ld = 0.0;
ld = nextafterl (ld, -1.0);
v2.d = nextafterl (ld, 1.0);
if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
{
printf ("0.0L down: mantissa0 differs: %8x vs %8x\n",
v1.ieee.mantissa0, v2.ieee.mantissa0);
result = 1;
}
if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
{
printf ("0.0L down: mantissa1 differs: %8x vs %8x\n",
v1.ieee.mantissa1, v2.ieee.mantissa1);
result = 1;
}
if (v1.ieee.exponent != v2.ieee.exponent)
{
printf ("0.0L down: exponent differs: %4x vs %4x\n",
v1.ieee.exponent, v2.ieee.exponent);
result = 1;
}
if (1 != v2.ieee.negative)
{
printf ("0.0L down: negative differs: 1 vs %d\n",
v2.ieee.negative);
result = 1;
}
}
#endif