github.com/afumu/libc@v0.0.6/musl/src/fenv/__flt_rounds.c (about)

     1  #include <float.h>
     2  #include <fenv.h>
     3  
     4  int __flt_rounds()
     5  {
     6  	switch (fegetround()) {
     7  #ifdef FE_TOWARDZERO
     8  	case FE_TOWARDZERO: return 0;
     9  #endif
    10  	case FE_TONEAREST: return 1;
    11  #ifdef FE_UPWARD
    12  	case FE_UPWARD: return 2;
    13  #endif
    14  #ifdef FE_DOWNWARD
    15  	case FE_DOWNWARD: return 3;
    16  #endif
    17  	}
    18  	return -1;
    19  }