1 //===--- Round floating point to nearest integer on aarch64 -----*- C++ -*-===// 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 #ifndef LLVM_LIBC_SRC___SUPPORT_FPUTIL_AARCH64_NEAREST_INTEGER_H 10 #define LLVM_LIBC_SRC___SUPPORT_FPUTIL_AARCH64_NEAREST_INTEGER_H 11 12 #include "src/__support/common.h" 13 #include "src/__support/macros/properties/architectures.h" 14 15 #if !defined(LIBC_TARGET_ARCH_IS_AARCH64) 16 #error "Invalid include" 17 #endif 18 19 namespace LIBC_NAMESPACE { 20 namespace fputil { 21 nearest_integer(float x)22LIBC_INLINE float nearest_integer(float x) { 23 float result; 24 __asm__ __volatile__("frintn %s0, %s1\n\t" : "=w"(result) : "w"(x)); 25 return result; 26 } 27 nearest_integer(double x)28LIBC_INLINE double nearest_integer(double x) { 29 double result; 30 __asm__ __volatile__("frintn %d0, %d1\n\t" : "=w"(result) : "w"(x)); 31 return result; 32 } 33 34 } // namespace fputil 35 } // namespace LIBC_NAMESPACE 36 37 #endif // LLVM_LIBC_SRC___SUPPORT_FPUTIL_AARCH64_NEAREST_INTEGER_H 38