53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
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//----------------------------------------------------------------------------//
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// GNU GPL OS/K //
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// //
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// Authors: spectral` //
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// NeoX //
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// //
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// Desc: Conversion utilities //
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//----------------------------------------------------------------------------//
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#include "common/convert.h"
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//
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// Digits table for bases <=36
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//
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static const char digits[36] =
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"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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//
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// Integer to string in any base between 2 and 36 (included)
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//
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char *itoa(int i, char *str, int base)
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{
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int neg = 0;
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char *orig = str;
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if (base < 2 || base > 36)
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return NULL;
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// deal with negatives
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if (i < 0) {
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neg = 1;
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i = -i;
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}
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// deal with zero separatly
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if (i == 0) {
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*str++ = '0';
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}
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// compute digits... in reverse order (XXX?)
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while (i > 0) {
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*str++ = digits[i % base];
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i /= base;
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}
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if (neg) *str++ = '-';
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*str = '\0';
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return reverse(orig);
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}
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