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HSTR_I.C
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C/C++ Source or Header
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1992-12-26
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586b
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28 lines
/*
** Originally published as part of the MicroFirm Function Library
**
** Copyright 1986, S.E. Margison
** Copyright 1989, Robert B.Stout
**
** Subset version released to the public domain, 1992
**
** Make an ascii hexadecimal string into an integer.
*/
#include <stdio.h>
unsigned int hstr_i(char *cptr)
{
unsigned int i, j = 0;
while ((NULL != *cptr) && isxdigit(*cptr))
{
i = *cptr++ - '0';
if (9 < i)
i -= 7;
j <<= 4;
j |= (i & 0x0f);
}
return(j);
}