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From: Joseph Myers <jsm28@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-3266] c: Do not use *_IS_IEC_60559 == 2 Date: Thu, 13 Oct 2022 01:14:25 +0000 (GMT) [thread overview] Message-ID: <20221013011425.C367A3858C56@sourceware.org> (raw) https://gcc.gnu.org/g:e867f6b7e636391cf70a8d9b9bac79248b3fad67 commit r13-3266-ge867f6b7e636391cf70a8d9b9bac79248b3fad67 Author: Joseph Myers <joseph@codesourcery.com> Date: Thu Oct 13 01:13:36 2022 +0000 c: Do not use *_IS_IEC_60559 == 2 A late change for C2x (addressing comments from the second round of editorial review before the CD ballot, postdating the most recent public working draft) removed the value 2 for *_IS_IEC_60559 (a new <float.h> macro added in C2x). Adjust the implementation accordingly not to use this value. Bootstrapped with no regressions for x86_64-pc-linux-gnu. gcc/ * ginclude/float.h (FLT_IS_IEC_60559, DBL_IS_IEC_60559) (LDBL_IS_IEC_60559): Update comment. gcc/c-family/ * c-cppbuiltin.cc (builtin_define_float_constants): Do not use value 2 for *_IS_IEC_60559. gcc/testsuite/ * gcc.dg/c2x-float-10.c: Do not expect value 2 for *_IS_IEC_60559. Diff: --- gcc/c-family/c-cppbuiltin.cc | 10 +++------- gcc/ginclude/float.h | 3 +-- gcc/testsuite/gcc.dg/c2x-float-10.c | 6 +++--- 3 files changed, 7 insertions(+), 12 deletions(-) diff --git a/gcc/c-family/c-cppbuiltin.cc b/gcc/c-family/c-cppbuiltin.cc index 4b8486c8879..2e39acb9239 100644 --- a/gcc/c-family/c-cppbuiltin.cc +++ b/gcc/c-family/c-cppbuiltin.cc @@ -319,14 +319,10 @@ builtin_define_float_constants (const char *name_prefix, } /* For C2x *_IS_IEC_60559. 0 means the type does not match an IEC - 60559 format, 1 that it matches a format but not operations and 2 - that it matches a format and operations (but may not conform to - Annex F; we take this as meaning exceptions and rounding modes - need not be supported). */ + 60559 format, 1 that it matches a format but not necessarily + operations. */ sprintf (name, "__%s_IS_IEC_60559__", name_prefix); - builtin_define_with_int_value (name, - (fmt->ieee_bits == 0 - ? 0 : (fmt->round_towards_zero ? 1 : 2))); + builtin_define_with_int_value (name, fmt->ieee_bits != 0); } /* Define __DECx__ constants for TYPE using NAME_PREFIX and SUFFIX. */ diff --git a/gcc/ginclude/float.h b/gcc/ginclude/float.h index afe4a712878..bc5439d664f 100644 --- a/gcc/ginclude/float.h +++ b/gcc/ginclude/float.h @@ -248,8 +248,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #define DBL_NORM_MAX __DBL_NORM_MAX__ #define LDBL_NORM_MAX __LDBL_NORM_MAX__ -/* Whether each type matches an IEC 60559 format (1 for format, 2 for - format and operations). */ +/* Whether each type matches an IEC 60559 format. */ #undef FLT_IS_IEC_60559 #undef DBL_IS_IEC_60559 #undef LDBL_IS_IEC_60559 diff --git a/gcc/testsuite/gcc.dg/c2x-float-10.c b/gcc/testsuite/gcc.dg/c2x-float-10.c index 7b53a6ab050..7206921db87 100644 --- a/gcc/testsuite/gcc.dg/c2x-float-10.c +++ b/gcc/testsuite/gcc.dg/c2x-float-10.c @@ -21,13 +21,13 @@ _Static_assert (FLT_IS_IEC_60559 == 0); _Static_assert (DBL_IS_IEC_60559 == 0); _Static_assert (LDBL_IS_IEC_60559 == 0); #else -_Static_assert (FLT_IS_IEC_60559 == 2); -_Static_assert (DBL_IS_IEC_60559 == 2); +_Static_assert (FLT_IS_IEC_60559 == 1); +_Static_assert (DBL_IS_IEC_60559 == 1); #if LDBL_MANT_DIG == 106 || LDBL_MIN_EXP == -16382 /* IBM long double and m68k extended format do not meet the definition of an IEC 60559 interchange or extended format. */ _Static_assert (LDBL_IS_IEC_60559 == 0); #else -_Static_assert (LDBL_IS_IEC_60559 == 2); +_Static_assert (LDBL_IS_IEC_60559 == 1); #endif #endif
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