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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/c-cppbuiltin.c | |
| 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/c-cppbuiltin.c')
| -rw-r--r-- | gcc/c-cppbuiltin.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/c-cppbuiltin.c b/gcc/c-cppbuiltin.c index 1565aac..fa4d9a1 100644 --- a/gcc/c-cppbuiltin.c +++ b/gcc/c-cppbuiltin.c @@ -105,6 +105,7 @@ builtin_define_float_constants (const char *name_prefix, char name[64], buf[128]; int dig, min_10_exp, max_10_exp; int decimal_dig; + int type_decimal_dig; fmt = REAL_MODE_FORMAT (TYPE_MODE (type)); gcc_assert (fmt->b != 10); @@ -198,8 +199,20 @@ builtin_define_float_constants (const char *name_prefix, if (decimal_dig < d_decimal_dig) decimal_dig++; } + /* Similar, for this type rather than long double. */ + { + double type_d_decimal_dig = 1 + fmt->p * log10_b; + type_decimal_dig = type_d_decimal_dig; + if (type_decimal_dig < type_d_decimal_dig) + type_decimal_dig++; + } if (type == long_double_type_node) builtin_define_with_int_value ("__DECIMAL_DIG__", decimal_dig); + else + { + sprintf (name, "__%s_DECIMAL_DIG__", name_prefix); + builtin_define_with_int_value (name, type_decimal_dig); + } /* Since, for the supported formats, B is always a power of 2, we construct the following numbers directly as a hexadecimal |