/* $OpenBSD: flt_rounds.c,v 1.2 1997/08/01 21:36:32 deraadt Exp $ */ #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() { double tmp; int x; asm("mffs %0; stfiwx %0,0,%1" : "=f"(tmp): "b"(&x)); return map[x & 0x03]; }