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/*
* Copyright (c) 1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND CARNEGIE MELLON UNIVERSITY
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT
* SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Users of this software agree to return to Carnegie Mellon any
* improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* Export of this software is permitted only after complying with the
* regulations of the U.S. Deptartment of Commerce relating to the
* Export of Technical Data.
*/
/* atoh -- convert ascii to hexidecimal
*
* Usage: i = atoh (string);
* unsigned int i;
* char *string;
*
* Atoo converts the value contained in "string" into an
* unsigned integer, assuming that the value represents
* a hexidecimal number.
*
* HISTORY
* $Log: atoh.c,v $
* Revision 1.2 90/12/11 17:50:07 mja
* Add copyright/disclaimer for distribution.
*
* 20-Nov-79 Steven Shafer (sas) at Carnegie-Mellon University
* Created for VAX.
*
*/
unsigned int atoh(ap)
char *ap;
{
register char *p;
register unsigned int n;
register int digit,lcase;
p = ap;
n = 0;
while(*p == ' ' || *p == ' ')
p++;
while ((digit = (*p >= '0' && *p <= '9')) ||
(lcase = (*p >= 'a' && *p <= 'f')) ||
(*p >= 'A' && *p <= 'F')) {
n *= 16;
if (digit) n += *p++ - '0';
else if (lcase) n += 10 + (*p++ - 'a');
else n += 10 + (*p++ - 'A');
}
return(n);
}
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