1 /* $OpenBSD: fpsetsticky.c,v 1.2 2005/08/07 16:40:15 espie Exp $ */ 2 /* 3 * Written by J.T. Conklin, Apr 11, 1995 4 * Public domain. 5 */ 6 7 #include <ieeefp.h> 8 9 fp_except 10 fpsetsticky(sticky) 11 fp_except sticky; 12 { 13 fp_except old; 14 fp_except new; 15 16 __asm__("cfc1 %0,$31" : "=r" (old)); 17 18 new = old; 19 new &= ~(0x1f << 2); 20 new |= ((sticky & 0x1f) << 2); 21 22 __asm__("ctc1 %0,$31" : : "r" (new)); 23 24 return (old >> 2) & 0x1f; 25 } 26