| 1 | #include <tommath.h> |
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| 2 | #ifdef BN_MP_INIT_MULTI_C |
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| 3 | /* LibTomMath, multiple-precision integer library -- Tom St Denis |
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| 4 | * |
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| 5 | * LibTomMath is a library that provides multiple-precision |
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| 6 | * integer arithmetic as well as number theoretic functionality. |
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| 7 | * |
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| 8 | * The library was designed directly after the MPI library by |
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| 9 | * Michael Fromberger but has been written from scratch with |
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| 10 | * additional optimizations in place. |
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| 11 | * |
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| 12 | * The library is free for all purposes without any express |
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| 13 | * guarantee it works. |
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| 14 | * |
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| 15 | * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com |
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| 16 | */ |
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| 17 | #include <stdarg.h> |
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| 18 | |
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| 19 | int mp_init_multi(mp_int *mp, ...) |
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| 20 | { |
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| 21 | mp_err res = MP_OKAY; /* Assume ok until proven otherwise */ |
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| 22 | int n = 0; /* Number of ok inits */ |
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| 23 | mp_int* cur_arg = mp; |
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| 24 | va_list args; |
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| 25 | |
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| 26 | va_start(args, mp); /* init args to next argument from caller */ |
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| 27 | while (cur_arg != NULL) { |
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| 28 | if (mp_init(cur_arg) != MP_OKAY) { |
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| 29 | /* Oops - error! Back-track and mp_clear what we already |
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| 30 | succeeded in init-ing, then return error. |
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| 31 | */ |
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| 32 | va_list clean_args; |
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| 33 | |
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| 34 | /* end the current list */ |
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| 35 | va_end(args); |
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| 36 | |
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| 37 | /* now start cleaning up */ |
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| 38 | cur_arg = mp; |
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| 39 | va_start(clean_args, mp); |
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| 40 | while (n--) { |
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| 41 | mp_clear(cur_arg); |
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| 42 | cur_arg = va_arg(clean_args, mp_int*); |
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| 43 | } |
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| 44 | va_end(clean_args); |
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| 45 | res = MP_MEM; |
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| 46 | break; |
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| 47 | } |
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| 48 | n++; |
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| 49 | cur_arg = va_arg(args, mp_int*); |
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| 50 | } |
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| 51 | va_end(args); |
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| 52 | return res; /* Assumed ok, if error flagged above. */ |
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| 53 | } |
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| 54 | |
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| 55 | #endif |
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| 56 | |
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| 57 | /* $Source: /cvsroot/tcl/libtommath/bn_mp_init_multi.c,v $ */ |
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| 58 | /* $Revision: 1.1.1.3 $ */ |
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| 59 | /* $Date: 2006/12/01 00:08:11 $ */ |
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