diff options
Diffstat (limited to 'manual')
| -rw-r--r-- | manual/platform.texi | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/manual/platform.texi b/manual/platform.texi index c56ba7d413..d5fdc5bd05 100644 --- a/manual/platform.texi +++ b/manual/platform.texi @@ -148,14 +148,16 @@ Return a pointer to x86 CPU feature structure used by query macros for x86 CPU feature @var{leaf}. @end deftypefun -@deftypefn Macro int HAS_CPU_FEATURE (@var{name}) +@deftypefn Macro int CPU_FEATURE_PRESENT (@var{name}) This macro returns a nonzero value (true) if the processor has the feature @var{name}. @end deftypefn -@deftypefn Macro int CPU_FEATURE_USABLE (@var{name}) +@deftypefn Macro int CPU_FEATURE_ACTIVE (@var{name}) This macro returns a nonzero value (true) if the processor has the feature -@var{name} and the feature is supported by the operating system. +@var{name} and the feature is active. There may be other preconditions, +like sufficient stack space or further setup for AMX, which must be +satisfied before the feature can be used. @end deftypefn The supported processor features are: @@ -685,20 +687,20 @@ You could query if a processor supports @code{AVX} with: #include <sys/platform/x86.h> int -support_avx (void) +avx_present (void) @{ - return HAS_CPU_FEATURE (AVX); + return CPU_FEATURE_PRESENT (AVX); @} @end smallexample -and if @code{AVX} is usable with: +and if @code{AVX} is active and may be used with: @smallexample #include <sys/platform/x86.h> int -usable_avx (void) +avx_active (void) @{ - return CPU_FEATURE_USABLE (AVX); + return CPU_FEATURE_ACTIVE (AVX); @} @end smallexample |