1*2f2c0062Sguenther /* $OpenBSD: s_ceilf.c,v 1.8 2016/09/12 19:47:01 guenther Exp $ */ 229c788c4Smickey /* 329c788c4Smickey * Written by Michael Shalayeff. Public Domain 429c788c4Smickey */ 529c788c4Smickey 629c788c4Smickey #include <sys/types.h> 729c788c4Smickey #include <machine/ieeefp.h> 829c788c4Smickey #include "math.h" 929c788c4Smickey 1029c788c4Smickey float 11b11582bcSmickey ceilf(float x) 1229c788c4Smickey { 130c764565Smickey u_int64_t ofpsr, fpsr; 1429c788c4Smickey 15b5aa3b33Sguenther __asm__ volatile("fstds %%fr0,0(%0)" :: "r" (&ofpsr) : "memory"); 160c764565Smickey fpsr = (ofpsr & ~((u_int64_t)FP_RM << (9 + 32))) | 170c764565Smickey ((u_int64_t)FP_RP << (9 + 32)); 18b5aa3b33Sguenther __asm__ volatile("fldds 0(%0), %%fr0" :: "r" (&fpsr) : "memory"); 1929c788c4Smickey 20b5aa3b33Sguenther __asm__ volatile("frnd,sgl %0,%0" : "+f" (x)); 2129c788c4Smickey 22b5aa3b33Sguenther __asm__ volatile("fldds 0(%0), %%fr0" :: "r" (&ofpsr) : "memory"); 2329c788c4Smickey return (x); 2429c788c4Smickey } 25*2f2c0062Sguenther DEF_STD(ceilf); 26