llvm-project

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//===-- powitf2.cpp - Implement __powitf2 ---------------------------------===//
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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 __powitf2 for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#define QUAD_PRECISION
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#include "fp_lib.h"
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#if defined(CRT_HAS_TF_MODE)
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// Returns: a ^ b
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COMPILER_RT_ABI fp_t __powitf2(fp_t a, int b) {
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  const int recip = b < 0;
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  fp_t 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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#endif
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