1/* $NetBSD: qp.c,v 1.4 2022/10/05 10:28:19 nia Exp $ */ 2 3/*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31#include <sys/cdefs.h> 32 33#include "milieu.h" 34#include "softfloat.h" 35 36/* 37 * This file provides wrappers for the softfloat functions. We can't use 38 * invoke them directly since long double arguments are passed in FP/SIMD 39 * as well as being returned in them while float128 arguments are passed 40 * in normal registers. 41 * 42 * XXX: we're using compiler_rt for this now. Only one function remains 43 * that is missing from compiler_rt. 44 */ 45 46long double __negtf2(long double); 47 48union sf_ieee_flt_u { 49 float fltu_f; 50 float32 fltu_f32; 51}; 52 53union sf_ieee_dbl_u { 54 double dblu_d; 55 float64 dblu_f64; 56}; 57 58union sf_ieee_ldbl_u { 59 long double ldblu_ld; 60 float128 ldblu_f128; 61}; 62 63long double 64__negtf2(long double ld_a) 65{ 66 const union sf_ieee_ldbl_u zero = { .ldblu_ld = 0.0 }; 67 const union sf_ieee_ldbl_u a = { .ldblu_ld = ld_a }; 68 const union sf_ieee_ldbl_u b = { 69 .ldblu_f128 = float128_div(zero.ldblu_f128, a.ldblu_f128) 70 }; 71 72 return b.ldblu_ld; 73} 74