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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 /math | |
| parent | 9725517070c1dda41aa3676cf1cf61daa527e14e (diff) | |
| download | glibc-86ec486597056f93ebc215fc6a7f3bf5431d91f1.zip glibc-86ec486597056f93ebc215fc6a7f3bf5431d91f1.tar.gz glibc-86ec486597056f93ebc215fc6a7f3bf5431d91f1.tar.bz2 | |
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 'math')
| -rw-r--r-- | math/tgmath.h | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/math/tgmath.h b/math/tgmath.h index 243813c..108c1a1 100644 --- a/math/tgmath.h +++ b/math/tgmath.h @@ -115,18 +115,45 @@ __real_integer_type (__typeof__ (+(expr))), \ __complex_integer_type (__typeof__ (+(expr)))) +# if (__HAVE_DISTINCT_FLOAT16 \ + || __HAVE_DISTINCT_FLOAT32 \ + || __HAVE_DISTINCT_FLOAT64 \ + || __HAVE_DISTINCT_FLOAT32X \ + || __HAVE_DISTINCT_FLOAT64X \ + || __HAVE_DISTINCT_FLOAT128X) +# error "Unsupported _FloatN or _FloatNx types for <tgmath.h>." +# endif + /* Expand to text that checks if ARG_COMB has type _Float128, and if so calls the appropriately suffixed FCT (which may include a cast), or FCT and CFCT for complex functions, with arguments ARG_CALL. */ # if __HAVE_DISTINCT_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT) -# define __TGMATH_F128(arg_comb, fct, arg_call) \ +# if (!__HAVE_FLOAT64X \ + || __HAVE_FLOAT64X_LONG_DOUBLE \ + || !__HAVE_FLOATN_NOT_TYPEDEF) +# define __TGMATH_F128(arg_comb, fct, arg_call) \ __builtin_types_compatible_p (__typeof (+(arg_comb)), _Float128) \ ? fct ## f128 arg_call : -# define __TGMATH_CF128(arg_comb, fct, cfct, arg_call) \ +# define __TGMATH_CF128(arg_comb, fct, cfct, arg_call) \ __builtin_types_compatible_p (__typeof (+__real__ (arg_comb)), _Float128) \ ? (__expr_is_real (arg_comb) \ ? fct ## f128 arg_call \ : cfct ## f128 arg_call) : +# else +/* _Float64x is a distinct type at the C language level, which must be + handled like _Float128. */ +# define __TGMATH_F128(arg_comb, fct, arg_call) \ + (__builtin_types_compatible_p (__typeof (+(arg_comb)), _Float128) \ + || __builtin_types_compatible_p (__typeof (+(arg_comb)), _Float64x)) \ + ? fct ## f128 arg_call : +# define __TGMATH_CF128(arg_comb, fct, cfct, arg_call) \ + (__builtin_types_compatible_p (__typeof (+__real__ (arg_comb)), _Float128) \ + || __builtin_types_compatible_p (__typeof (+__real__ (arg_comb)), \ + _Float64x)) \ + ? (__expr_is_real (arg_comb) \ + ? fct ## f128 arg_call \ + : cfct ## f128 arg_call) : +# endif # else # define __TGMATH_F128(arg_comb, fct, arg_call) /* Nothing. */ # define __TGMATH_CF128(arg_comb, fct, cfct, arg_call) /* Nothing. */ |