1//===-- powixf2.cpp - Implement __powixf2 ---------------------------------===//
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-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements __powixf2 for the compiler_rt library.
10//
11//===----------------------------------------------------------------------===//
12
13#if !_ARCH_PPC
14
15#include "int_lib.h"
16
17// Returns: a ^ b
18
19COMPILER_RT_ABI long double __powixf2(long double a, si_int b) {
20  const int recip = b < 0;
21  long double r = 1;
22  while (1) {
23    if (b & 1)
24      r *= a;
25    b /= 2;
26    if (b == 0)
27      break;
28    a *= a;
29  }
30  return recip ? 1 / r : r;
31}
32
33#endif
34