forked from OSchip/llvm-project
30 lines
783 B
C
30 lines
783 B
C
//===-- powisf2.cpp - Implement __powisf2 ---------------------------------===//
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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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//
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// This file implements __powisf2 for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#include "int_lib.h"
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// Returns: a ^ b
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COMPILER_RT_ABI float __powisf2(float a, int b) {
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const int recip = b < 0;
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float r = 1;
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while (1) {
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if (b & 1)
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r *= a;
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b /= 2;
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if (b == 0)
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break;
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a *= a;
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}
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return recip ? 1 / r : r;
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}
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