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| 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/config.h" |
| 14 | #include "src/__support/macros/properties/architectures.h" |
| 15 | #include "src/__support/macros/properties/cpu_features.h" |
| 16 | |
| 17 | #if !defined(LIBC_TARGET_ARCH_IS_ANY_RISCV) |
| 18 | #error "Invalid include" |
| 19 | #endif |
| 20 | |
| 21 | #include "src/__support/FPUtil/generic/sqrt.h" |
| 22 | |
| 23 | namespace LIBC_NAMESPACE_DECL { |
| 24 | namespace fputil { |
| 25 | |
| 26 | #ifdef LIBC_TARGET_CPU_HAS_FPU_FLOAT |
| 27 | template <> LIBC_INLINE float sqrt<float>(float x) { |
| 28 | float result; |
| 29 | asm("fsqrt.s %0, %1\n\t" : "=f"(result) : "f"(x)); |
| 30 | return result; |
| 31 | } |
| 32 | #endif // LIBC_TARGET_CPU_HAS_FPU_FLOAT |
| 33 | |
| 34 | #ifdef LIBC_TARGET_CPU_HAS_FPU_DOUBLE |
| 35 | template <> LIBC_INLINE double sqrt<double>(double x) { |
| 36 | double result; |
| 37 | asm("fsqrt.d %0, %1\n\t" : "=f"(result) : "f"(x)); |
| 38 | return result; |
| 39 | } |
| 40 | #endif // LIBC_TARGET_CPU_HAS_FPU_FLOAT |
| 41 | |
| 42 | } // namespace fputil |
| 43 | } // namespace LIBC_NAMESPACE_DECL |
| 44 | |
| 45 | #endif // LLVM_LIBC_SRC___SUPPORT_FPUTIL_RISCV_SQRT_H |
| 46 |
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