2 * Copyright (C) 2015 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
21 double fabs(double x) {
23 // Both Clang and GCC insist on moving r0/r1 into a double register
24 // and using fabs where bit-twiddling would be a better choice.
25 // They get fabsf right, but we need to be careful in fabsl too.
31 return __builtin_fabs(x);
35 float fabsf(float x) {
36 return __builtin_fabsf(x);
40 long double fabsl(long double x) { return __builtin_fabsl(x); }
42 long double fabsl(long double x) {
43 // Don't use __builtin_fabs here because of ARM. (See fabs above.)