libc/src/math/aarch64/sqrt.cpp

   1 //===-- Implementation of the sqrt function for aarch64 -------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/math/sqrt.h"
  10 #include "src/__support/common.h"
  11
  12 namespace __llvm_libc {
  13
  14 LLVM_LIBC_FUNCTION(double, sqrt, (double x)) {
  15   double y;
  16   __asm__ __volatile__("fsqrt %d0, %d1\n\t" : "=w"(y) : "w"(x));
  17   return y;
  18 }
  19
  20 } // namespace __llvm_libc