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46 lines
1.3 KiB
46 lines
1.3 KiB
/* |
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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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