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| author | Michael Meissner <meissner@gcc.gnu.org> | 2010-10-15 17:42:05 +0000 |
|---|---|---|
| committer | Michael Meissner <meissner@gcc.gnu.org> | 2010-10-15 17:42:05 +0000 |
| commit | 1b1562a55947daed482e2d8ef47a4f577397beb9 (patch) | |
| tree | 5a6ace72e7cb1c4c33366822e3836c93b74e3f78 /gcc/doc/cpp.texi | |
| parent | e74bf53a08b08e94ef88b0e1b0401e393efb1dac (diff) | |
| download | gcc-1b1562a55947daed482e2d8ef47a4f577397beb9.zip gcc-1b1562a55947daed482e2d8ef47a4f577397beb9.tar.gz gcc-1b1562a55947daed482e2d8ef47a4f577397beb9.tar.bz2 | |
Add fma support
From-SVN: r165515
Diffstat (limited to 'gcc/doc/cpp.texi')
| -rw-r--r-- | gcc/doc/cpp.texi | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/doc/cpp.texi b/gcc/doc/cpp.texi index 7276b61..a580e61 100644 --- a/gcc/doc/cpp.texi +++ b/gcc/doc/cpp.texi @@ -2345,6 +2345,15 @@ and swap operations on operands 1, 2, 4, 8 or 16 bytes in length, respectively. This macro is defined when the compiler is emitting Dwarf2 CFI directives to the assembler. When this is defined, it is possible to emit those same directives in inline assembly. + +@item __FP_FAST_FMA +@itemx __FP_FAST_FMAF +@itemx __FP_FAST_FMAL +These macros are defined with value 1 if the backend supports the +@code{fma}, @code{fmaf}, and @code{fmal} builtin functions, so that +the include file @file{math.h} can define the macros +@code{FP_FAST_FMA}, @code{FP_FAST_FMAF}, and @code{FP_FAST_FMAL} +for compatibility with the 1999 C standard. @end table @node System-specific Predefined Macros |