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Rework tst-strtod-round handling of inexact results.

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Joseph Myers 2013-06-13 15:41:58 +00:00
parent b406406a4f
commit 1f24b9ad0f
3 changed files with 925 additions and 233 deletions
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14
ChangeLog
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@ -1,3 +1,17 @@
2013-06-13 Joseph Myers <joseph@codesourcery.com>
* stdlib/gen-tst-strtod-round.c (round_str): Always generate
output for whether conversion result is exact. Take argument
indicating whether type is IBM long double.
(round_for_all): Change need_exact field to ibm_ld.
* stdlib/tst-strtod-round.c (struct exactness): New type.
(struct test): Change bool ld_ok field to struct exactness exact.
(TEST): Update all definitions for change to field.
(tests): Regenerate array contents.
(test_in_one_mode): Take pointer to new field instead of old ld_ok
field value. Check for IBM long double here.
(do_test): Update calls to test_in_one_mode.
2013-06-13 Siddhesh Poyarekar <siddhesh@redhat.com>
[BZ #12515]

10
stdlib/gen-tst-strtod-round.c
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@ -57,7 +57,7 @@ print_fp (mpfr_t f, const char *suffix, const char *suffix2)
static void
round_str (const char *s, const char *suffix,
int prec, int emin, int emax, bool need_exact)
int prec, int emin, int emax, bool ibm_ld)
{
mpfr_t f;
mpfr_set_default_prec (prec);
@ -65,7 +65,7 @@ round_str (const char *s, const char *suffix,
mpfr_set_emax (emax);
mpfr_init (f);
int r = string_to_fp (f, s, MPFR_RNDD);
if (need_exact)
if (ibm_ld)
{
assert (prec == 106 && emin == -1073 && emax == 1024);
/* The maximum value in IBM long double has discontiguous
@ -76,9 +76,9 @@ round_str (const char *s, const char *suffix,
MPFR_RNDN);
if (mpfr_cmpabs (f, max_value) > 0)
r = 1;
mpfr_printf ("\t%s,\n", r ? "false" : "true");
mpfr_clear (max_value);
}
mpfr_printf ("\t%s,\n", r ? "false" : "true");
print_fp (f, suffix, ",\n");
string_to_fp (f, s, MPFR_RNDN);
print_fp (f, suffix, ",\n");
@ -97,7 +97,7 @@ round_for_all (const char *s)
int prec;
int emin;
int emax;
bool need_exact;
bool ibm_ld;
} formats[7] = {
{ "f", 24, -148, 128, false },
{ "", 53, -1073, 1024, false },
@ -122,7 +122,7 @@ round_for_all (const char *s)
for (i = 0; i < 7; i++)
{
round_str (s, formats[i].suffix, formats[i].prec,
formats[i].emin, formats[i].emax, formats[i].need_exact);
formats[i].emin, formats[i].emax, formats[i].ibm_ld);
if (i < 6)
mpfr_printf (",\n");
}

1134
stdlib/tst-strtod-round.c
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