forked from OSchip/llvm-project
38 lines
872 B
C
38 lines
872 B
C
/* ===-- powixf2.cpp - Implement __powixf2 ---------------------------------===
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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 __powixf2 for the compiler_rt library.
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*
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* ===----------------------------------------------------------------------===
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*/
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#if !_ARCH_PPC
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#include "int_lib.h"
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/* Returns: a ^ b */
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COMPILER_RT_ABI long double
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__powixf2(long double a, si_int b)
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{
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const int recip = b < 0;
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long double r = 1;
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while (1)
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{
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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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#endif
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