| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <math.h> |
| |
| #include "fpmath.h" |
| |
| double fabs(double x) { |
| #if __arm__ |
| // Both Clang and GCC insist on moving r0/r1 into a double register |
| // and using fabs where bit-twiddling would be a better choice. |
| // They get fabsf right, but we need to be careful in fabsl too. |
| IEEEd2bits u; |
| u.d = x; |
| u.bits.sign = 0; |
| return u.d; |
| #else |
| return __builtin_fabs(x); |
| #endif |
| } |
| |
| float fabsf(float x) { |
| return __builtin_fabsf(x); |
| } |
| |
| #if defined(__LP64__) |
| long double fabsl(long double x) { return __builtin_fabsl(x); } |
| #else |
| long double fabsl(long double x) { |
| // Don't use __builtin_fabs here because of ARM. (See fabs above.) |
| return fabs(x); |
| } |
| #endif |