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| author | Joseph Myers <joseph@codesourcery.com> | 2017-11-03 21:11:50 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2017-11-03 21:11:50 +0000 |
| commit | 86ec486597056f93ebc215fc6a7f3bf5431d91f1 (patch) | |
| tree | 8a0604d26b9ff7e8f231bf3de89da0466ca7605d /ChangeLog | |
| parent | 9725517070c1dda41aa3676cf1cf61daa527e14e (diff) | |
| download | glibc-86ec486597056f93ebc215fc6a7f3bf5431d91f1.tar.xz glibc-86ec486597056f93ebc215fc6a7f3bf5431d91f1.zip | |
Handle more _FloatN, _FloatNx types in tgmath.h.
Continuing the preparation for additional _FloatN / _FloatNx type
support, this patch improves how <tgmath.h> handles such types.
Use of #error is added for cases of distinct types that are not
supported by the header, to indicate that additional work on the
header would be needed if, for example, _Float16 support were added to
glibc. Given that #error, types with the same format as other types
are handled automatically by the sizeof-based logic, so the only case
needing special handling is that where _Float64x exists, has the same
format as _Float128, does not have the same format as long double, and
is not a typedef for _Float128. In this case (which will apply for
powerpc64le once _Float64x support is added to glibc), the
__builtin_types_compatible_p calls testing for _Float128 need
corresponding calls testing for _Float64x, which this patch adds.
Tested for x86_64.
* math/tgmath.h [__HAVE_DISTINCT_FLOAT16
|| __HAVE_DISTINCT_FLOAT32 || __HAVE_DISTINCT_FLOAT64
|| __HAVE_DISTINCT_FLOAT32X || __HAVE_DISTINCT_FLOAT64X
|| __HAVE_DISTINCT_FLOAT128X]: Use #error.
[__HAVE_DISTINCT_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)
&& __HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE
&& __HAVE_FLOATN_NOT_TYPEDEF] (__TGMATH_F128): Handle _Float64x
the same as _Float128.
[__HAVE_DISTINCT_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)
&& __HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE
&& __HAVE_FLOATN_NOT_TYPEDEF] (__TGMATH_CF128): Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -1,5 +1,17 @@ 2017-11-03 Joseph Myers <joseph@codesourcery.com> + * math/tgmath.h [__HAVE_DISTINCT_FLOAT16 + || __HAVE_DISTINCT_FLOAT32 || __HAVE_DISTINCT_FLOAT64 + || __HAVE_DISTINCT_FLOAT32X || __HAVE_DISTINCT_FLOAT64X + || __HAVE_DISTINCT_FLOAT128X]: Use #error. + [__HAVE_DISTINCT_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT) + && __HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE + && __HAVE_FLOATN_NOT_TYPEDEF] (__TGMATH_F128): Handle _Float64x + the same as _Float128. + [__HAVE_DISTINCT_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT) + && __HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE + && __HAVE_FLOATN_NOT_TYPEDEF] (__TGMATH_CF128): Likewise. + * stdlib/stdlib.h [__HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (strtof16): Declare. |