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| author | Joseph Myers <joseph@codesourcery.com> | 2017-10-17 20:16:01 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2017-10-17 20:16:01 +0000 |
| commit | 13c92696d2f66e94e4f04248550cc2b8f283bfd0 (patch) | |
| tree | ed78614959cadafa22818b78bc27150d1001eeb6 /posix/pathconf.c | |
| parent | 71d85045fdaefbd2dc1708ed6123ebdb880cb3ed (diff) | |
| download | glibc-13c92696d2f66e94e4f04248550cc2b8f283bfd0.tar.gz glibc-13c92696d2f66e94e4f04248550cc2b8f283bfd0.tar.xz glibc-13c92696d2f66e94e4f04248550cc2b8f283bfd0.zip | |
Use __f128 to define FLT128_* constants in include/float.h for old GCC.
When using compilers before GCC 7, include/float.h provides fallback definitions of FLT128_* constants. These definitions use 'Q' constant suffixes, which works for configurations with _Float128 ABI-distinct from long double, but not where it has the same ABI as long double. This patch changes the definitions to use the __f128 macro from <bits/floatn.h>, so allowing them to work in the non-distinct _Float128 case (where they are used in building glibc tests, not for building glibc itself) as well. Tested (a) with build-many-glibcs.py with GCC 6 (installed stripped shared libraries unchanged by the patch); (b) with build-many-glibcs.py with GCC 6 together with the main patch to enable float128 aliases; (c) for x86_64 with both GCC 6 and GCC 7. * include/float.h [!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (FLT128_MAX): Define using __f128. [!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (FLT128_EPSILON): Likewise. [!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (FLT128_MIN): Likewise. [!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (FLT128_TRUE_MIN): Likewise.
Diffstat (limited to 'posix/pathconf.c')
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