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1//===-- powisf2.cpp - Implement __powisf2 ---------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements __powisf2 for the compiler_rt library.10//11//===----------------------------------------------------------------------===//12 13#include "int_lib.h"14 15// Returns: a ^ b16 17COMPILER_RT_ABI float __powisf2(float a, int b) {18 const int recip = b < 0;19 float r = 1;20 while (1) {21 if (b & 1)22 r *= a;23 b /= 2;24 if (b == 0)25 break;26 a *= a;27 }28 return recip ? 1 / r : r;29}30