73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <math.h>
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#include "fpmath.h"
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double fabs(double x) {
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#if __arm__
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// Both Clang and GCC insist on moving r0/r1 into a double register
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// and using fabs where bit-twiddling would be a better choice.
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// They get fabsf right, but we need to be careful in fabsl too.
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IEEEd2bits u;
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u.d = x;
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u.bits.sign = 0;
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return u.d;
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#else
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return __builtin_fabs(x);
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#endif
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}
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float fabsf(float x) {
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return __builtin_fabsf(x);
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}
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#if defined(__LP64__)
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long double fabsl(long double x) { return __builtin_fabsl(x); }
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#else
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long double fabsl(long double x) {
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// Don't use __builtin_fabs here because of ARM. (See fabs above.)
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return fabs(x);
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}
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#endif
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#if defined(__aarch64__)
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float ceilf(float x) { return __builtin_ceilf(x); }
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double ceil(double x) { return __builtin_ceil(x); }
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float floorf(float x) { return __builtin_floorf(x); }
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double floor(double x) { return __builtin_floor(x); }
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float fmaf(float x, float y, float z) { return __builtin_fmaf(x, y, z); }
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double fma(double x, double y, double z) { return __builtin_fma(x, y, z); }
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float fmaxf(float x, float y) { return __builtin_fmaxf(x, y); }
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double fmax(double x, double y) { return __builtin_fmax(x, y); }
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float fminf(float x, float y) { return __builtin_fminf(x, y); }
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double fmin(double x, double y) { return __builtin_fmin(x, y); }
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float rintf(float x) { return __builtin_rintf(x); }
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double rint(double x) { return __builtin_rint(x); }
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float roundf(float x) { return __builtin_roundf(x); }
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double round(double x) { return __builtin_round(x); }
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float truncf(float x) { return __builtin_truncf(x); }
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double trunc(double x) { return __builtin_trunc(x); }
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#endif
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