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| author | Joseph Myers <joseph@codesourcery.com> | 2010-04-25 22:54:22 +0100 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2010-04-25 22:54:22 +0100 |
| commit | 2778d7667c9ef15520b1679417467934e24ffa0f (patch) | |
| tree | feff2a16895d1da5319551fc1b48b05b2a464692 /gcc/ginclude | |
| parent | 045d4002b76c990d99a66dc6f6c1c014808a2e79 (diff) | |
| download | gcc-2778d7667c9ef15520b1679417467934e24ffa0f.zip gcc-2778d7667c9ef15520b1679417467934e24ffa0f.tar.gz gcc-2778d7667c9ef15520b1679417467934e24ffa0f.tar.bz2 | |
c-common.c (flag_isoc1x): New.
gcc:
* c-common.c (flag_isoc1x): New.
(flag_isoc99): Update comment.
* c-common.h (flag_isoc1x): New.
(flag_isoc99): Update comment.
* c-cppbuiltin.c (builtin_define_float_constants): Also define
__<type>_DECIMAL_DIG__.
* c-opts.c (set_std_c1x): New.
(c_common_handle_option): Handle -std=c1x and -std=gnu1x.
(set_std_c89, set_std_c99): Also set flag_isoc1x to 0.
* c.opt (-std=c1x, -std=gnu1x): New options.
* doc/cpp.texi: Mention -std=c1x.
* doc/cppopts.texi (-std=c1x, -std=gnu1x): Document.
* doc/extend.texi: Mention -std=c1x and -std=gnu1x.
* doc/invoke.texi (-std=c1x, -std=gnu1x): Document.
* doc/standards.texi: Mention C1X.
* ginclude/float.h (FLT_DECIMAL_DIG, DBL_DECIMAL_DIG,
LDBL_DECIMAL_DIG, FLT_HAS_SUBNORM, DBL_HAS_SUBNORM,
LDBL_HAS_SUBNORM, FLT_TRUE_MIN, DBL_TRUE_MIN, LDBL_TRUE_MIN):
Define for C1X.
gcc/testsuite:
* gcc.dg/c90-float-1.c: Also test that C1X macros are not defined.
* gcc.dg/c99-float-1.c: Also test that C1X macros are not defined.
* gcc.dg/c1x-float-1.c: New test.
libcpp:
* include/cpplib.h (enum c_lang): Add CLK_GNUC1X and CLK_STDC1X.
* init.c (lang_defaults): Add entries for new language variants.
(cpp_init_builtins): Define __STDC_VERSION__ to 201000L for C1X
variants.
From-SVN: r158711
Diffstat (limited to 'gcc/ginclude')
| -rw-r--r-- | gcc/ginclude/float.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/gcc/ginclude/float.h b/gcc/ginclude/float.h index 9969f1c..5c472c5 100644 --- a/gcc/ginclude/float.h +++ b/gcc/ginclude/float.h @@ -157,6 +157,45 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #endif /* C99 */ +#if defined (__STDC_VERSION__) && __STDC_VERSION__ > 199901L +/* Versions of DECIMAL_DIG for each floating-point type. */ +#undef FLT_DECIMAL_DIG +#undef DBL_DECIMAL_DIG +#undef LDBL_DECIMAL_DIG +#define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ +#define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ +#define LDBL_DECIMAL_DIG __DECIMAL_DIG__ + +/* Whether types support subnormal numbers. */ +#undef FLT_HAS_SUBNORM +#undef DBL_HAS_SUBNORM +#undef LDBL_HAS_SUBNORM +#define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ +#define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ +#define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ + +/* Minimum positive values, including subnormals. */ +#undef FLT_TRUE_MIN +#undef DBL_TRUE_MIN +#undef LDBL_TRUE_MIN +#if __FLT_HAS_DENORM__ +#define FLT_TRUE_MIN __FLT_DENORM_MIN__ +#else +#define FLT_TRUE_MIN __FLT_MIN__ +#endif +#if __DBL_HAS_DENORM__ +#define DBL_TRUE_MIN __DBL_DENORM_MIN__ +#else +#define DBL_TRUE_MIN __DBL_MIN__ +#endif +#if __LDBL_HAS_DENORM__ +#define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ +#else +#define LDBL_TRUE_MIN __LDBL_MIN__ +#endif + +#endif /* C1X */ + #ifdef __STDC_WANT_DEC_FP__ /* Draft Technical Report 24732, extension for decimal floating-point arithmetic: Characteristic of decimal floating types <float.h>. */ |