tommath/bn_mp_abs.c

40 lines
901 B
C
Raw Normal View History

#include "tommath_private.h"
2004-10-29 18:07:18 -04:00
#ifdef BN_MP_ABS_C
2003-02-28 11:08:34 -05:00
/* LibTomMath, multiple-precision integer library -- Tom St Denis
*
2003-08-04 21:24:44 -04:00
* LibTomMath is a library that provides multiple-precision
2003-02-28 11:08:34 -05:00
* integer arithmetic as well as number theoretic functionality.
*
2003-08-04 21:24:44 -04:00
* The library was designed directly after the MPI library by
2003-02-28 11:08:34 -05:00
* Michael Fromberger but has been written from scratch with
* additional optimizations in place.
*
2018-12-29 11:56:20 -05:00
* SPDX-License-Identifier: Unlicense
2003-02-28 11:08:34 -05:00
*/
2017-08-29 23:51:11 -04:00
/* b = |a|
2003-02-28 11:09:08 -05:00
*
* Simple function copies the input and fixes the sign to positive
*/
2017-09-20 10:59:43 -04:00
int mp_abs(const mp_int *a, mp_int *b)
2003-02-28 11:08:34 -05:00
{
2017-08-29 16:23:48 -04:00
int res;
2003-08-04 21:24:44 -04:00
2017-08-29 16:23:48 -04:00
/* copy a to b */
if (a != b) {
if ((res = mp_copy(a, b)) != MP_OKAY) {
return res;
}
}
2003-08-04 21:24:44 -04:00
2017-08-29 16:23:48 -04:00
/* force the sign of b to positive */
b->sign = MP_ZPOS;
2003-08-04 21:24:44 -04:00
2017-08-29 16:23:48 -04:00
return MP_OKAY;
2003-02-28 11:08:34 -05:00
}
2004-10-29 18:07:18 -04:00
#endif
2005-08-01 12:37:28 -04:00
2017-08-28 10:27:26 -04:00
/* ref: $Format:%D$ */
/* git commit: $Format:%H$ */
/* commit time: $Format:%ai$ */