/* * Written by J.T. Conklin, Apr 10, 1995 * Public domain. */ #include #include #if defined(LIBC_SCCS) && !defined(lint) static char rcsid[] = "$OpenBSD: flt_rounds.c,v 1.3 1997/08/01 21:36:33 deraadt Exp $"; #endif /* LIBC_SCCS and not lint */ static const int map[] = { 1, /* round to nearest */ 0, /* round to zero */ 3, /* round to negative infinity */ 2 /* round to positive infinity */ }; int __flt_rounds() { int x; __asm__("st %%fsr,%0" : "=m" (*&x)); return map[(x >> 30) & 0x03]; }