php man page for cpu_capabilities

cpu_capabilities(3alleg4)					  Allegro manual					 cpu_capabilities(3alleg4)

NAME

       cpu_capabilities - Contains the capability flags of the CPU. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       extern int cpu_capabilities;

DESCRIPTION

       Contains CPU flags indicating what features are available on the current CPU. The flags can be any combination of these:

	  CPU_ID       - Indicates that the "cpuid" instruction is
			 available. If this is set, then all Allegro CPU
			 variables are 100% reliable, otherwise there
			 may be some mistakes.
	  CPU_FPU      - An FPU is available.
	  CPU_IA64     - Running on Intel 64 bit CPU
	  CPU_AMD64    - Running on AMD 64 bit CPU
	  CPU_MMX      - Intel MMX  instruction set is available.
	  CPU_MMXPLUS  - Intel MMX+ instruction set is available.
	  CPU_SSE      - Intel SSE  instruction set is available.
	  CPU_SSE2     - Intel SSE2 instruction set is available.
	  CPU_SSE3     - Intel SSE3 instruction set is available.
	  CPU_3DNOW    - AMD 3DNow! instruction set is available.
	  CPU_ENH3DNOW - AMD Enhanced 3DNow! instruction set is
			 available.
	  CPU_CMOV     - Pentium Pro "cmov" instruction is available.

       You  can check for multiple features by OR-ing the flags together.  For example, to check if the CPU has an FPU and MMX instructions avail-
       able, you'd do:

	  if ((cpu_capabilities & (CPU_FPU | CPU_MMX)) ==
	      (CPU_FPU | CPU_MMX)) {
	     printf("CPU has both an FPU and MMX instructions!
");
	  }

       You can read this variable after you have called check_cpu() (which is automatically called by allegro_init()).

SEE ALSO

       check_cpu(3alleg4), cpu_vendor(3alleg4), cpu_family(3alleg4), cpu_model(3alleg4), cpu_capabilities(3alleg4), allegro_init(3alleg4)

Allegro 							   version 4.4.2					 cpu_capabilities(3alleg4)