/* $OpenBSD: flt_rounds.c,v 1.5 2007/10/27 20:02:59 miod Exp $ */ /* * Written by J.T. Conklin, Apr 10, 1995 * Public domain. */ #include #include static const int map[] = { 1, /* round to nearest */ 0, /* round to zero */ 2, /* round to positive infinity */ 3 /* round to negative infinity */ }; int __flt_rounds() { int x; __asm__("st %%fsr,%0" : "=m" (*&x)); return map[(x >> 30) & 0x03]; }