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author | Joseph Myers <joseph@codesourcery.com> | 2017-12-05 21:52:15 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2017-12-05 21:52:15 +0000 |
commit | f7787234964031bb642bfeb43a31292e1769b56c (patch) | |
tree | 133fc5a908ad5fddb97624125389c8b4be7109c8 /sysdeps/unix/sysv/linux/x86_64/x32 | |
parent | 07ed18d26a342741cb25a4739158c65ed9dd4d09 (diff) | |
download | glibc-f7787234964031bb642bfeb43a31292e1769b56c.tar.gz glibc-f7787234964031bb642bfeb43a31292e1769b56c.tar.xz glibc-f7787234964031bb642bfeb43a31292e1769b56c.zip |
Use long double not double for _Float64 with old GCC if values the same.
If double, long double and _Float64 all have the same set of values, TS 18661-3 requires the usual arithmetic conversions on long double and _Float64 to produce _Float64. For this to be the case when building with a compiler without a distinct _Float64 type, _Float64 must be a typedef for long double, not for double. (_Float32x, however, must be double in such a case, not long double, because the usual arithmetic conversions on _Float32x and double must produce double.) This patch adjusts the fallback definition of _Float64 and associated macros accordingly in that case, to fix the build of test-tgmath3 with GCC 6 for such a configuration. Tested in conjunction with _Float64 changes with build-many-glibcs.py for arm-linux-gnueabi, to make sure the issue with test-tgmath3 is fixed. Also tested for x86_64. * bits/floatn-common.h: Include <bits/long-double.h>. [__HAVE_FLOAT64 && (!__GNUC_PREREQ (7, 0) || defined __cplusplus) && __NO_LONG_DOUBLE_MATH] (__f64): Use suffix 'l'. [__HAVE_FLOAT64 && (!__GNUC_PREREQ (7, 0) || defined __cplusplus) && __NO_LONG_DOUBLE_MATH] (__CFLOAT64): Use _Complex long double. [__HAVE_FLOAT64 && (!__GNUC_PREREQ (7, 0) || defined __cplusplus) && __NO_LONG_DOUBLE_MATH] (_Float64): Use long double. [__HAVE_FLOAT64 && !__GNUC_PREREQ (7, 0) && __NO_LONG_DOUBLE_MATH] (__builtin_huge_valf64): Use __builtin_huge_vall. [__HAVE_FLOAT64 && !__GNUC_PREREQ (7, 0) && __NO_LONG_DOUBLE_MATH] (__builtin_inff64): Use __builtin_infl. [__HAVE_FLOAT64 && !__GNUC_PREREQ (7, 0) && __NO_LONG_DOUBLE_MATH] (__builtin_nanf64): Use __builtin_nanl. [__HAVE_FLOAT64 && !__GNUC_PREREQ (7, 0) && __NO_LONG_DOUBLE_MATH] (__builtin_nansf64): Use __builtin_nansl.
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86_64/x32')
0 files changed, 0 insertions, 0 deletions