#include #include "cpu_features.h" /* 7.6.4.1 The fegetenv function stores the current floating-point environment in the object pointed to by envp. */ int fegetenv (fenv_t * envp) { __asm__ ("fnstenv %0;": "=m" (*envp)); /* fnstenv sets control word to non-stop for all exceptions, so we need to reload our env to restore the original mask. */ __asm__ ("fldenv %0" : : "m" (*envp)); /* And the SSE environment. */ if (__HAS_SSE) __asm__ ("stmxcsr %0" : "=m" (envp->__mxcsr)); return 0; }