52 lines
452 B
C
52 lines
452 B
C
/*
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misc.c
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*/
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#include "mach.h"
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int power_of_2(n, ref_exp)
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int n, *ref_exp;
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{
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int exp;
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exp= 0;
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if (n <= 0)
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return 0;
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while (!(n % 2))
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{
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n= n/2;
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exp++;
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}
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if (n != 1)
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return 0;
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if (ref_exp)
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*ref_exp= exp;
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return 1;
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}
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int uns_power_of_2(n, ref_exp)
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unsigned n, *ref_exp;
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{
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int exp;
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exp= 0;
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if (!n)
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return 0;
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while (!(n % 2))
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{
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n= n/2;
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exp++;
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}
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if (n != 1)
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return 0;
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if (ref_exp)
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*ref_exp= exp;
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return 1;
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}
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