diff options
Diffstat (limited to 'source4/heimdal/lib/hcrypto/libtommath/bn_mp_dr_setup.c')
| -rw-r--r-- | source4/heimdal/lib/hcrypto/libtommath/bn_mp_dr_setup.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/source4/heimdal/lib/hcrypto/libtommath/bn_mp_dr_setup.c b/source4/heimdal/lib/hcrypto/libtommath/bn_mp_dr_setup.c new file mode 100644 index 0000000000..1d7d856ef0 --- /dev/null +++ b/source4/heimdal/lib/hcrypto/libtommath/bn_mp_dr_setup.c @@ -0,0 +1,32 @@ +#include <tommath.h> +#ifdef BN_MP_DR_SETUP_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, tomstdenis@gmail.com, http://libtom.org + */ + +/* determines the setup value */ +void mp_dr_setup(mp_int *a, mp_digit *d) +{ + /* the casts are required if DIGIT_BIT is one less than + * the number of bits in a mp_digit [e.g. DIGIT_BIT==31] + */ + *d = (mp_digit)((((mp_word)1) << ((mp_word)DIGIT_BIT)) - + ((mp_word)a->dp[0])); +} + +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_dr_setup.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ |