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Fix strtod test for values above maximum for IBM long double.

This commit is contained in:
Joseph Myers 2012-09-06 15:33:06 +00:00
parent 053406fa70
commit ed8c2ecd21
3 changed files with 23 additions and 3 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2012-09-06 Joseph Myers <joseph@codesourcery.com>
* stdlib/gen-tst-strtod-round.c: Include <assert.h>.
(round_str): Handle values above the maximum for IBM long double
as inexact.
* stdlib/tst-strtod-round.c (tests): Regenerated.
2012-09-06 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* sysdeps/s390/s390-32/multiarch/Makefile: Remove -mzarch

15
stdlib/gen-tst-strtod-round.c
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@ -18,6 +18,7 @@
<http://www.gnu.org/licenses/>. */
#define _GNU_SOURCE
#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
@ -65,7 +66,19 @@ round_str (const char *s, const char *suffix,
mpfr_init (f);
int r = string_to_fp (f, s, MPFR_RNDD);
if (need_exact)
mpfr_printf ("\t%s,\n", r ? "false" : "true");
{
assert (prec == 106 && emin == -1073 && emax == 1024);
/* The maximum value in IBM long double has discontiguous
mantissa bits. */
mpfr_t max_value;
mpfr_init2 (max_value, 107);
mpfr_set_str (max_value, "0x1.fffffffffffff7ffffffffffffcp+1023", 0,
MPFR_RNDN);
if (mpfr_cmpabs (f, max_value) > 0)
r = 1;
mpfr_printf ("\t%s,\n", r ? "false" : "true");
mpfr_clear (max_value);
}
print_fp (f, suffix, ",\n");
string_to_fp (f, s, MPFR_RNDN);
print_fp (f, suffix, ",\n");

4
stdlib/tst-strtod-round.c
View File

@ -1927,7 +1927,7 @@ static const struct test tests[] = {
0xf.ffffffffffffcp+1020L,
0xf.ffffffffffffcp+1020L,
0xf.ffffffffffffcp+1020L,
true,
false,
0xf.ffffffffffffcp+1020L,
0xf.ffffffffffffcp+1020L,
0xf.ffffffffffffcp+1020L,
@ -2032,7 +2032,7 @@ static const struct test tests[] = {
-0xf.ffffffffffffcp+1020L,
-0xf.ffffffffffffcp+1020L,
-0xf.ffffffffffffcp+1020L,
true,
false,
-0xf.ffffffffffffcp+1020L,
-0xf.ffffffffffffcp+1020L,
-0xf.ffffffffffffcp+1020L,