1 /* 2 * Written by J.T. Conklin, Apr 10, 1995 3 * Public domain. 4 */ 5 6 #include <sys/types.h> 7 #include <machine/float.h> 8 9 static const int map[] = { 10 1, /* round to nearest */ 11 0, /* round to zero */ 12 3, /* round to negative infinity */ 13 2 /* round to positive infinity */ 14 }; 15 16 int 17 __flt_rounds() 18 { 19 int x; 20 21 __asm__("st %%fsr,%0" : "=m" (*&x)); 22 return map[(x >> 30) & 0x03]; 23 } 24