1*642e4c0cSmiod /* $OpenBSD: s_ceilf.c,v 1.9 2023/01/27 16:43:33 miod 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 ceilf(float x)11b11582bcSmickeyceilf(float x) 1229c788c4Smickey { 130c764565Smickey u_int64_t ofpsr, fpsr; 1429c788c4Smickey 15*642e4c0cSmiod __asm__ volatile("fstds %%fr0,0(%1)" : "=m" (ofpsr) : "r" (&ofpsr)); 160c764565Smickey fpsr = (ofpsr & ~((u_int64_t)FP_RM << (9 + 32))) | 170c764565Smickey ((u_int64_t)FP_RP << (9 + 32)); 18*642e4c0cSmiod __asm__ volatile("fldds 0(%0), %%fr0" :: "r" (&fpsr), "m" (fpsr)); 1929c788c4Smickey 20b5aa3b33Sguenther __asm__ volatile("frnd,sgl %0,%0" : "+f" (x)); 2129c788c4Smickey 22*642e4c0cSmiod __asm__ volatile("fldds 0(%0), %%fr0" :: "r" (&ofpsr), "m" (ofpsr)); 2329c788c4Smickey return (x); 2429c788c4Smickey } 252f2c0062Sguenther DEF_STD(ceilf); 26