47 lines
1,018 B
C
47 lines
1,018 B
C
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/* Long to ASCII conversion routine - used by print, and those programs
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* which want to do low level formatted output without hauling in a great
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* deal of extraneous code. This will convert a long value to an ascii
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* string in any radix from 2 - 16.
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* RETURNS - the number of characters in the converted buffer.
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*/
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static char digits[] = {
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'0', '1', '2', '3', '4',
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'5', '6', '7', '8', '9',
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'a', 'b', 'c', 'd', 'e', 'f'
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};
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#define BITS_IN_LONG (8*sizeof(long))
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int zltoa(long aval, register char *buf, int base)
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{
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/*
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* if unsigned long wont work on your host, you will probably have
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* to use signed long and accept this as not working for negative
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* numbers.
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*/
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register unsigned long val;
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register char *p;
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char tbuf[BITS_IN_LONG];
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int size = 0;
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p = tbuf;
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*p++ = '\0';
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if (aval < 0 && base == 10)
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{
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*buf++ = '-';
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val = -aval;
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size++;
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}
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else
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val = aval;
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do {
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*p++ = digits[val % base];
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}
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while (val /= base);
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while ((*buf++ = *--p) != 0)
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++size;
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return(size);
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}
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