d07a2164e7
This header is needed to provide the declaration for the sqrt template. You can build without these in the CMake build, but not having this include in the architecture specific headers makes them not self contained.
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
//===-- Square root of IEEE 754 floating point numbers ----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_SRC___SUPPORT_FPUTIL_RISCV_SQRT_H
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#define LLVM_LIBC_SRC___SUPPORT_FPUTIL_RISCV_SQRT_H
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#include "src/__support/common.h"
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#include "src/__support/macros/config.h"
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#include "src/__support/macros/properties/architectures.h"
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#include "src/__support/macros/properties/cpu_features.h"
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#if !defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)
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#error "Invalid include"
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#endif
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#include "src/__support/FPUtil/generic/sqrt.h"
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namespace LIBC_NAMESPACE_DECL {
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namespace fputil {
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#ifdef LIBC_TARGET_CPU_HAS_FPU_FLOAT
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template <> LIBC_INLINE float sqrt<float>(float x) {
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float result;
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asm("fsqrt.s %0, %1\n\t" : "=f"(result) : "f"(x));
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return result;
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}
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#endif // LIBC_TARGET_CPU_HAS_FPU_FLOAT
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#ifdef LIBC_TARGET_CPU_HAS_FPU_DOUBLE
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template <> LIBC_INLINE double sqrt<double>(double x) {
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double result;
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asm("fsqrt.d %0, %1\n\t" : "=f"(result) : "f"(x));
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return result;
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}
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#endif // LIBC_TARGET_CPU_HAS_FPU_FLOAT
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} // namespace fputil
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} // namespace LIBC_NAMESPACE_DECL
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#endif // LLVM_LIBC_SRC___SUPPORT_FPUTIL_RISCV_SQRT_H
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