tommath/bn_mp_abs.c

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/* LibTomMath, multiple-precision integer library -- Tom St Denis
*
* LibTomMath is library that provides for multiple-precision
* integer arithmetic as well as number theoretic functionality.
*
* The library is designed directly after the MPI library by
* Michael Fromberger but has been written from scratch with
* additional optimizations in place.
*
* The library is free for all purposes without any express
* guarantee it works.
*
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* Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org
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*/
#include <tommath.h>
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/* b = |a|
*
* Simple function copies the input and fixes the sign to positive
*/
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int
mp_abs (mp_int * a, mp_int * b)
{
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int res;
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if ((res = mp_copy (a, b)) != MP_OKAY) {
return res;
}
b->sign = MP_ZPOS;
return MP_OKAY;
}