Mercurial > dropbear
view libtommath/bn_mp_clamp.c @ 1460:58a74cb829b8
Pointer parameter could be declared as pointing to const (callback)
author | Francois Perrad <francois.perrad@gadz.org> |
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date | Sat, 19 Aug 2017 22:39:53 +0200 |
parents | 60fc6476e044 |
children | 8bba51a55704 |
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#include <tommath_private.h> #ifdef BN_MP_CLAMP_C /* LibTomMath, multiple-precision integer library -- Tom St Denis * * LibTomMath is a library that provides multiple-precision * integer arithmetic as well as number theoretic functionality. * * The library was 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. * * Tom St Denis, [email protected], http://libtom.org */ /* trim unused digits * * This is used to ensure that leading zero digits are * trimed and the leading "used" digit will be non-zero * Typically very fast. Also fixes the sign if there * are no more leading digits */ void mp_clamp (mp_int * a) { /* decrease used while the most significant digit is * zero. */ while ((a->used > 0) && (a->dp[a->used - 1] == 0)) { --(a->used); } /* reset the sign flag if used == 0 */ if (a->used == 0) { a->sign = MP_ZPOS; } } #endif /* $Source$ */ /* $Revision$ */ /* $Date$ */