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33 lines
679 B
C
33 lines
679 B
C
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// $Id$ -*-c++-*-
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//***************************************************************************
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// File:
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// MathExtras.h
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//
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// Purpose:
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//
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// History:
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// 8/25/01 - Vikram Adve - Created
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//**************************************************************************/
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#ifndef LLVM_SUPPORT_MATH_EXTRAS_H
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#define LLVM_SUPPORT_MATH_EXTRAS_H
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#include <sys/types.h>
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inline bool IsPowerOf2 (int64_t C, unsigned& getPow);
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inline
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bool IsPowerOf2(int64_t C, unsigned& getPow)
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{
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if (C < 0)
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C = -C;
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bool isBool = C > 0 && (C == (C & ~(C - 1)));
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if (isBool)
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for (getPow = 0; C > 1; getPow++)
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C = C >> 1;
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return isBool;
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}
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#endif /*LLVM_SUPPORT_MATH_EXTRAS_H*/
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