forked from KolibriOS/kolibrios
33 lines
541 B
C
33 lines
541 B
C
/* Copyright (C) 1996 DJ Delorie, see COPYING.DJ for details */
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/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
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#include <math.h>
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double
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ldexp(double v, int e)
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{
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double two = 2.0;
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if (e < 0)
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{
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e = -e; /* This just might overflow on two-complement machines. */
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if (e < 0) return 0.0;
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while (e > 0)
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{
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if (e & 1) v /= two;
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two *= two;
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e >>= 1;
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}
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}
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else if (e > 0)
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{
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while (e > 0)
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{
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if (e & 1) v *= two;
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two *= two;
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e >>= 1;
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}
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}
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return v;
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}
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