mirror of https://github.com/CGAL/cgal
24 lines
371 B
C++
24 lines
371 B
C++
#ifndef CGAL_BITS_H
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#define CGAL_BITS_H
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#include <CGAL/basic.h>
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#include <cmath>
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namespace CGAL {
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double log2(double x)
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{
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return log10(x) / log10(2.0);
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}
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unsigned int bits(double x)
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{
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CGAL_precondition( static_cast<int>(x) == x );
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if ( x == 0 ) { return 1; }
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return static_cast<unsigned int>(log2( fabs(x) )) + 1;
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}
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} //namespace CGAL
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#endif // CGAL_BITS_H
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