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x86: Do not use __builtin_isinf_sign on clang 

clang does not handle pseudo normal numbers,

It fixes the regression on test-ldouble-isinf when built with clang:

Failure: isinf (pseudo_zero): Exception "Invalid operation" set
Failure: isinf (pseudo_inf): Exception "Invalid operation" set
Failure: isinf (pseudo_qnan): Exception "Invalid operation" set
Failure: isinf (pseudo_snan): Exception "Invalid operation" set
Failure: isinf (pseudo_unnormal): Exception "Invalid operation" set
Failure: isinf_downward (pseudo_zero): Exception "Invalid operation" set
Failure: isinf_downward (pseudo_inf): Exception "Invalid operation" set
Failure: isinf_downward (pseudo_qnan): Exception "Invalid operation" set
Failure: isinf_downward (pseudo_snan): Exception "Invalid operation" set
Failure: isinf_downward (pseudo_unnormal): Exception "Invalid operation" set
Failure: isinf_towardzero (pseudo_zero): Exception "Invalid operation" set
Failure: isinf_towardzero (pseudo_inf): Exception "Invalid operation" set
Failure: isinf_towardzero (pseudo_qnan): Exception "Invalid operation" set
Failure: isinf_towardzero (pseudo_snan): Exception "Invalid operation" set
Failure: isinf_towardzero (pseudo_unnormal): Exception "Invalid operation" set
Failure: isinf_upward (pseudo_zero): Exception "Invalid operation" set
Failure: isinf_upward (pseudo_inf): Exception "Invalid operation" set
Failure: isinf_upward (pseudo_qnan): Exception "Invalid operation" set
Failure: isinf_upward (pseudo_snan): Exception "Invalid operation" set
Failure: isinf_upward (pseudo_unnormal): Exception "Invalid operation" set
This commit is contained in:
Adhemerval Zanella 2022-04-01 17:03:34 -03:00
parent c92cb4f094
commit b0faad30d4
1 changed files with 2 additions and 1 deletions
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3
math/math.h
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@ -1163,7 +1163,8 @@ enum
(__builtin_types_compatible_p (__typeof (x), _Float128) \ (__builtin_types_compatible_p (__typeof (x), _Float128) \
? __isinff128 (x) : __builtin_isinf_sign (x)) ? __isinff128 (x) : __builtin_isinf_sign (x))
# elif (__GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__) \ # elif (__GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__) \
|| __glibc_clang_prereq (3,7) || __glibc_clang_prereq (3,7) \
&& __FP_BUILTIN_DENORMAL
# define isinf(x) __builtin_isinf_sign (x) # define isinf(x) __builtin_isinf_sign (x)
# else # else
# define isinf(x) __MATH_TG ((x), __isinf, (x)) # define isinf(x) __MATH_TG ((x), __isinf, (x))