llvm/libc/src/math/generic/expxf16.h

//===-- Common utilities for half-precision exponential functions ---------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIBC_SRC_MATH_GENERIC_EXPXF16_H
#define LLVM_LIBC_SRC_MATH_GENERIC_EXPXF16_H

#include "src/__support/CPP/array.h"
#include "src/__support/FPUtil/PolyEval.h"
#include "src/__support/FPUtil/multiply_add.h"
#include "src/__support/FPUtil/nearest_integer.h"
#include "src/__support/macros/attributes.h"
#include "src/__support/macros/config.h"
#include <stdint.h>

namespace LIBC_NAMESPACE_DECL {

// Generated by Sollya with the following commands:
//   > display = hexadecimal;
//   > for i from -18 to 12 do print(round(exp(i), SG, RN));
static constexpr cpp::array<float, 31> EXP_HI = …;

// Generated by Sollya with the following commands:
//   > display = hexadecimal;
//   > for i from 0 to 7 do print(round(exp(i * 2^-3), SG, RN));
static constexpr cpp::array<float, 8> EXP_MID = …;

struct ExpRangeReduction { … };

LIBC_INLINE ExpRangeReduction exp_range_reduction(float16 x) { … }

// Generated by Sollya with the following commands:
//   > display = hexadecimal;
//   > for i from 0 to 7 do printsingle(round(2^(i * 2^-3), SG, RN));
constexpr cpp::array<uint32_t, 8> EXP2_MID_BITS = …;

} // namespace LIBC_NAMESPACE_DECL

#endif // LLVM_LIBC_SRC_MATH_GENERIC_EXPXF16_H