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author | Kevin B Kenny <kennykb@acm.org> | 2005-01-19 22:41:26 (GMT) |
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committer | Kevin B Kenny <kennykb@acm.org> | 2005-01-19 22:41:26 (GMT) |
commit | b9cf65a08e6a59e434685e894e3189c201ac6791 (patch) | |
tree | 1f0868ef44c9f17d83d10dc94343df7b8cfe1842 /libtommath/bn_mp_init.c | |
parent | c6a259aeeca4814a97cf6694814c63e74e4e18fa (diff) | |
download | tcl-b9cf65a08e6a59e434685e894e3189c201ac6791.zip tcl-b9cf65a08e6a59e434685e894e3189c201ac6791.tar.gz tcl-b9cf65a08e6a59e434685e894e3189c201ac6791.tar.bz2 |
Import of libtommath 0.33
Diffstat (limited to 'libtommath/bn_mp_init.c')
-rw-r--r-- | libtommath/bn_mp_init.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/libtommath/bn_mp_init.c b/libtommath/bn_mp_init.c new file mode 100644 index 0000000..9d70554 --- /dev/null +++ b/libtommath/bn_mp_init.c @@ -0,0 +1,42 @@ +#include <tommath.h> +#ifdef BN_MP_INIT_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@iahu.ca, http://math.libtomcrypt.org + */ + +/* init a new mp_int */ +int mp_init (mp_int * a) +{ + int i; + + /* allocate memory required and clear it */ + a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * MP_PREC); + if (a->dp == NULL) { + return MP_MEM; + } + + /* set the digits to zero */ + for (i = 0; i < MP_PREC; i++) { + a->dp[i] = 0; + } + + /* set the used to zero, allocated digits to the default precision + * and sign to positive */ + a->used = 0; + a->alloc = MP_PREC; + a->sign = MP_ZPOS; + + return MP_OKAY; +} +#endif |