libc/src/math/aarch64/roundf.cpp

   1 //===-- Implementation of the roundf 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/roundf.h"
  10 #include "src/__support/common.h"
  11
  12 namespace __llvm_libc {
  13
  14 LLVM_LIBC_FUNCTION(float, roundf, (float x)) {
  15   float y;
  16   __asm__ __volatile__("frinta %s0, %s1\n\t" : "=w"(y) : "w"(x));
  17   return y;
  18 }
  19
  20 } // namespace __llvm_libc