1 /* $NetBSD: fpsetsticky.c,v 1.9 2014/09/17 11:02:55 joerg Exp $ */ 2 3 /* 4 * Written by J.T. Conklin, Apr 11, 1995 5 * Public domain. 6 */ 7 8 #include <sys/cdefs.h> 9 #if defined(LIBC_SCCS) && !defined(lint) 10 __RCSID("$NetBSD: fpsetsticky.c,v 1.9 2014/09/17 11:02:55 joerg Exp $"); 11 #endif /* LIBC_SCCS and not lint */ 12 13 #include "namespace.h" 14 15 #include <ieeefp.h> 16 17 #ifdef __weak_alias __weak_alias(fpsetsticky,_fpsetsticky)18__weak_alias(fpsetsticky,_fpsetsticky) 19 #endif 20 21 fp_except 22 fpsetsticky(fp_except sticky) 23 { 24 fp_except old; 25 fp_except new; 26 27 __asm(".set push; .set noat; cfc1 %0,$31; .set pop" : "=r" (old)); 28 29 new = old & ~(0x1f << 2); 30 new |= (sticky & 0x1f) << 2; 31 32 __asm(".set push; .set noat; ctc1 %0,$31; .set pop" : "=r" (new)); 33 34 return (old >> 2) & 0x1f; 35 } 36