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Add test for bug 5794 (incorrect expm1 overflow).

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This commit is contained in:
Joseph Myers 2012-02-29 20:49:20 +00:00
parent 5b8a4d4a09
commit 0fcad3e243
4 changed files with 17 additions and 0 deletions
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5
ChangeLog
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@ -1,5 +1,10 @@
2012-02-29 Joseph Myers <joseph@codesourcery.com>
[BZ #5794]
* math/libm-test.inc (expm1_test): Add test for bug 5794.
* sysdeps/i386/fpu/libm-test-ulps: Update.
* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Reduce some expected errors.
* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.

4
math/libm-test.inc
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@ -2602,6 +2602,10 @@ expm1_test (void)
TEST_f_f (expm1, 1, M_El - 1.0);
TEST_f_f (expm1, 0.75L, 1.11700001661267466854536981983709561L);
#if defined TEST_LDOUBLE && LDBL_MAX_EXP >= 16384
TEST_f_f (expm1, 11356.25L, 9.05128237311923300051376115753226014206e+4931L);
#endif
errno = 0;
TEST_f_f (expm1, 100000.0, plus_infty);
check_int ("errno for expm1(large) == ERANGE", errno, ERANGE, 0, 0, 0);

3
sysdeps/i386/fpu/libm-test-ulps
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@ -452,6 +452,8 @@ ldouble: 8
# expm1
Test "expm1 (1) == M_El - 1.0":
ildouble: 1
Test "expm1 (11356.25) == 9.05128237311923300051376115753226014206e+4931":
ldouble: 1
# gamma
Test "gamma (-0.5) == log(2*sqrt(pi))":
@ -1173,6 +1175,7 @@ ldouble: 8
Function: "expm1":
ildouble: 1
ldouble: 1
Function: "gamma":
double: 1

5
sysdeps/x86_64/fpu/libm-test-ulps
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@ -511,6 +511,9 @@ double: 1
float: 1
idouble: 1
ifloat: 1
Test "expm1 (11356.25) == 9.05128237311923300051376115753226014206e+4931":
ildouble: 1
ldouble: 1
# gamma
Test "gamma (-0.5) == log(2*sqrt(pi))":
@ -1265,6 +1268,8 @@ double: 1
float: 1
idouble: 1
ifloat: 1
ildouble: 1
ldouble: 1
Function: "gamma":
ildouble: 1