1 //===-- Square root of IEEE 754 floating point numbers ----------*- 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_RISCV_SQRT_H 10 #define LLVM_LIBC_SRC___SUPPORT_FPUTIL_RISCV_SQRT_H 11 12 #include "src/__support/common.h" 13 #include "src/__support/macros/properties/architectures.h" 14 15 #if !defined(LIBC_TARGET_ARCH_IS_ANY_RISCV) 16 #error "Invalid include" 17 #endif 18 19 #include "src/__support/FPUtil/generic/sqrt.h" 20 21 namespace LIBC_NAMESPACE { 22 namespace fputil { 23 24 #ifdef __riscv_flen 25 template <> LIBC_INLINE float sqrt<float>(float x) { 26 float result; 27 __asm__ __volatile__("fsqrt.s %0, %1\n\t" : "=f"(result) : "f"(x)); 28 return result; 29 } 30 31 #if __riscv_flen >= 64 32 template <> LIBC_INLINE double sqrt<double>(double x) { 33 double result; 34 __asm__ __volatile__("fsqrt.d %0, %1\n\t" : "=f"(result) : "f"(x)); 35 return result; 36 } 37 #endif // __riscv_flen >= 64 38 #endif // __riscv_flen 39 40 } // namespace fputil 41 } // namespace LIBC_NAMESPACE 42 43 #endif // LLVM_LIBC_SRC___SUPPORT_FPUTIL_RISCV_SQRT_H 44