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Add regression tests for some of the bugs recently discovered in the

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vendor's strtod() implementation.

While here, disable some of the long double tests on i386, since
FreeBSD/i386 is the only port that doesn't evaluate long doubles in
their full precision (due to constant folding bugs in gcc).
This commit is contained in:
David Schultz 2004-01-19 05:30:56 +00:00
parent e249fdbedb
commit 24f285966e
1 changed files with 15 additions and 4 deletions
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19
tools/regression/lib/libc/stdio/test-scanfloat.c
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@ -33,6 +33,7 @@ __FBSDID("$FreeBSD$");
#include <assert.h>
#include <float.h>
#include <ieeefp.h>
#include <locale.h>
#include <math.h>
#include <stdio.h>
@ -62,9 +63,6 @@ main(int argc, char *argv[])
sscanf("3.141592653589793", "%lf", &d);
assert(eq(DBL, d, 3.141592653589793));
sscanf("3.14159265358979323846", "%Lg", &ld);
assert(eq(LDBL, ld, 3.14159265358979323846L));
sscanf("1.234568e+06", "%E", &f);
assert(eq(FLT, f, 1.234568e+06));
@ -121,7 +119,10 @@ main(int argc, char *argv[])
assert(d == 0x90a.bcdefp+09);
assert(strcmp(buf, "a") == 0);
#if LDBL_MANT_DIG > DBL_MANT_DIG
#if (LDBL_MANT_DIG > DBL_MANT_DIG) && !defined(__i386__)
sscanf("3.14159265358979323846", "%Lg", &ld);
assert(eq(LDBL, ld, 3.14159265358979323846L));
sscanf(" 0X.0123456789abcdefffp-3g", "%Le%s", &ld, buf);
assert(ld == 0x0.0123456789abcdefffp-3L);
assert(strcmp(buf, "g") == 0);
@ -163,6 +164,16 @@ main(int argc, char *argv[])
sscanf("-nan", "%le", &d);
assert(isnan(d));
fpsetround(FP_RN);
/* strtod() should round small numbers to 0. */
sscanf("0x1.23p-5000", "%le", &d);
assert(d == 0.0);
/* Extra digits in a denormal shouldn't break anything. */
sscanf("0x1.2345678p-1050", "%le", &d);
assert(d == 0x1.234568p-1050);
printf("PASS scanfloat\n");
return (0);