diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | include/float.h | 31 |
2 files changed, 21 insertions, 16 deletions
diff --git a/ChangeLog b/ChangeLog index 37e8e192b6..429690e1fc 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,11 @@ 2017-06-12 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com> + * include/float.h: Allow the definition of macros prefixed with + FLT128 even if _ISOMAC is defined, but provided that + __STDC_WANT_IEC_60559_TYPES_EXT__ is defined as a macro. + +2017-06-12 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com> + * manual/math.texi (Mathematics): Add description for _FloatN and _FloatNx types and mentions that they are not support in glibc for any architecture, so far. diff --git a/include/float.h b/include/float.h index 20c4acbf78..a5b357dc96 100644 --- a/include/float.h +++ b/include/float.h @@ -10,22 +10,21 @@ /* Supplement float.h macros for _Float128 for older compilers which do not yet support the type. These are described in TS 18661-3. */ -#ifndef _ISOMAC -# include <features.h> -# include <bits/floatn.h> -# if !__GNUC_PREREQ (7, 0) && __HAVE_DISTINCT_FLOAT128 -# define FLT128_MANT_DIG 113 -# define FLT128_DECIMAL_DIG 36 -# define FLT128_DIG 33 -# define FLT128_MIN_EXP (-16381) -# define FLT128_MIN_10_EXP (-4931) -# define FLT128_MAX_EXP 16384 -# define FLT128_MAX_10_EXP 4932 -# define FLT128_MAX 1.18973149535723176508575932662800702e+4932Q -# define FLT128_EPSILON 1.92592994438723585305597794258492732e-34Q -# define FLT128_MIN 3.36210314311209350626267781732175260e-4932Q -# define FLT128_TRUE_MIN 6.47517511943802511092443895822764655e-4966Q -# endif +#include <features.h> +#include <bits/floatn.h> +#if !__GNUC_PREREQ (7, 0) \ + && __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT) +# define FLT128_MANT_DIG 113 +# define FLT128_DECIMAL_DIG 36 +# define FLT128_DIG 33 +# define FLT128_MIN_EXP (-16381) +# define FLT128_MIN_10_EXP (-4931) +# define FLT128_MAX_EXP 16384 +# define FLT128_MAX_10_EXP 4932 +# define FLT128_MAX 1.18973149535723176508575932662800702e+4932Q +# define FLT128_EPSILON 1.92592994438723585305597794258492732e-34Q +# define FLT128_MIN 3.36210314311209350626267781732175260e-4932Q +# define FLT128_TRUE_MIN 6.47517511943802511092443895822764655e-4966Q #endif #endif /* _LIBC_FLOAT_H */ |