unsigned x86_64_fputype (void) unsigned x86_fputype (void)
An x86-only function that returns the FPU type number (e.g. 387).
The x86_64_fputype() function is defined only for x86_64. For compatibility with shared code, x86_fputype() is defined to be the same as x86_64_fputype() on x86_64.