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Test signs of NaNs in libm-test.inc where appropriate.

This commit is contained in:
Joseph Myers 2013-11-16 12:48:35 +00:00
parent ee1466a953
commit ce66581742
3 changed files with 60 additions and 16 deletions
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17
ChangeLog
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@ -1,5 +1,22 @@
2013-11-16 Joseph Myers <joseph@codesourcery.com>
* math/libm-test.inc (TEST_NAN_SIGN): New macro.
(NO_TEST_INLINE): Update value.
(ERRNO_UNCHANGED): Likewise.
(ERRNO_EDOM): Likewise.
(ERRNO_ERANGE): Likewise.
(IGNORE_RESULT): Likewise.
(check_float_internal): Check signs of NaN results if
TEST_NAN_SIGN used.
(check_complex): Pass TEST_NAN_SIGN flag through to second
check_float_internal call.
(copysign_test_data): Add tests with quiet NaNs as second
argument. Use TEST_NAN_SIGN.
(fabs_test_data): Add test of negative quiet NaN argument. Use
TEST_NAN_SIGN.
(signbit_test_data): Add tests of quiet NaN argument.
* math/gen-libm-test.pl (parse_args): Handle TEST_NAN_SIGN.
* math/gen-libm-test.pl (show_exceptions): Take extra argument
$ignore_result.
(parse_args): Handle function results specified as IGNORE.

2
math/gen-libm-test.pl
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@ -218,7 +218,7 @@ sub parse_args {
# consistency check
if ($current_arg == $#args) {
die ("wrong number of arguments")
unless ($args[$current_arg] =~ /EXCEPTION|ERRNO|IGNORE_ZERO_INF_SIGN|NO_TEST_INLINE/);
unless ($args[$current_arg] =~ /EXCEPTION|ERRNO|IGNORE_ZERO_INF_SIGN|TEST_NAN_SIGN|NO_TEST_INLINE/);
} elsif ($current_arg < $#args) {
die ("wrong number of arguments");
} elsif ($current_arg > ($#args+1)) {

57
math/libm-test.inc
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@ -173,13 +173,14 @@ struct ulp_data
#define EXCEPTIONS_OK INVALID_EXCEPTION_OK+DIVIDE_BY_ZERO_EXCEPTION_OK
/* Some special test flags, passed together with exceptions. */
#define IGNORE_ZERO_INF_SIGN 0x400
#define NO_TEST_INLINE 0x800
#define TEST_NAN_SIGN 0x800
#define NO_TEST_INLINE 0x1000
/* Indicate errno settings required or disallowed. */
#define ERRNO_UNCHANGED 0x1000
#define ERRNO_EDOM 0x2000
#define ERRNO_ERANGE 0x4000
#define ERRNO_UNCHANGED 0x2000
#define ERRNO_EDOM 0x4000
#define ERRNO_ERANGE 0x8000
/* Flags generated by gen-libm-test.pl, not entered here manually. */
#define IGNORE_RESULT 0x8000
#define IGNORE_RESULT 0x10000
/* Values underflowing only for float. */
#ifdef TEST_FLOAT
@ -732,11 +733,29 @@ check_float_internal (const char *test_name, FLOAT computed, FLOAT expected,
goto out;
FLOAT max_ulp = find_test_ulps (test_name);
if (issignaling (computed) && issignaling (expected))
ok = 1;
{
if ((exceptions & TEST_NAN_SIGN) != 0
&& signbit (computed) != signbit (expected))
{
ok = 0;
printf ("signaling NaN has wrong sign.\n");
}
else
ok = 1;
}
else if (issignaling (computed) || issignaling (expected))
ok = 0;
else if (isnan (computed) && isnan (expected))
ok = 1;
{
if ((exceptions & TEST_NAN_SIGN) != 0
&& signbit (computed) != signbit (expected))
{
ok = 0;
printf ("quiet NaN has wrong sign.\n");
}
else
ok = 1;
}
else if (isinf (computed) && isinf (expected))
{
/* Test for sign of infinities. */
@ -834,7 +853,9 @@ check_complex (const char *test_name, __complex__ FLOAT computed,
/* Don't check again for exceptions or errno, just pass through the
other relevant flags. */
check_float_internal (str, part_comp, part_exp,
exception & (IGNORE_ZERO_INF_SIGN | IGNORE_RESULT),
exception & (IGNORE_ZERO_INF_SIGN
| TEST_NAN_SIGN
| IGNORE_RESULT),
&imag_max_error);
free (str);
}
@ -6815,11 +6836,15 @@ static const struct test_ff_f_data copysign_test_data[] =
TEST_ff_f (copysign, minus_zero, plus_infty, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (copysign, minus_zero, minus_zero, minus_zero, NO_INEXACT_EXCEPTION),
/* XXX More correctly we would have to check the sign of the NaN. */
TEST_ff_f (copysign, qnan_value, 0, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (copysign, qnan_value, minus_zero, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (copysign, -qnan_value, 0, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (copysign, -qnan_value, minus_zero, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (copysign, 0, qnan_value, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (copysign, 0, -qnan_value, minus_zero, NO_INEXACT_EXCEPTION),
TEST_ff_f (copysign, minus_zero, qnan_value, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (copysign, minus_zero, -qnan_value, minus_zero, NO_INEXACT_EXCEPTION),
TEST_ff_f (copysign, qnan_value, 0, qnan_value, NO_INEXACT_EXCEPTION|TEST_NAN_SIGN),
TEST_ff_f (copysign, qnan_value, minus_zero, -qnan_value, NO_INEXACT_EXCEPTION|TEST_NAN_SIGN),
TEST_ff_f (copysign, -qnan_value, 0, qnan_value, NO_INEXACT_EXCEPTION|TEST_NAN_SIGN),
TEST_ff_f (copysign, -qnan_value, minus_zero, -qnan_value, NO_INEXACT_EXCEPTION|TEST_NAN_SIGN),
};
static void
@ -8196,7 +8221,8 @@ static const struct test_f_f_data fabs_test_data[] =
TEST_f_f (fabs, plus_infty, plus_infty, NO_INEXACT_EXCEPTION),
TEST_f_f (fabs, minus_infty, plus_infty, NO_INEXACT_EXCEPTION),
TEST_f_f (fabs, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
TEST_f_f (fabs, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|TEST_NAN_SIGN),
TEST_f_f (fabs, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|TEST_NAN_SIGN),
TEST_f_f (fabs, 38.0, 38.0, NO_INEXACT_EXCEPTION),
TEST_f_f (fabs, -M_El, M_El, NO_INEXACT_EXCEPTION),
@ -13347,11 +13373,12 @@ scalbln_test (void)
static const struct test_f_i_data signbit_test_data[] =
{
/* TODO: missing qNaN tests. */
TEST_f_b (signbit, 0, 0, NO_INEXACT_EXCEPTION),
TEST_f_b (signbit, minus_zero, 1, NO_INEXACT_EXCEPTION),
TEST_f_b (signbit, plus_infty, 0, NO_INEXACT_EXCEPTION),
TEST_f_b (signbit, minus_infty, 1, NO_INEXACT_EXCEPTION),
TEST_f_b (signbit, qnan_value, 0, NO_INEXACT_EXCEPTION),
TEST_f_b (signbit, -qnan_value, 1, NO_INEXACT_EXCEPTION),
/* signbit (x) != 0 for x < 0. */
TEST_f_b (signbit, -1, 1, NO_INEXACT_EXCEPTION),