43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
#include "amplify_tommath_private.h"
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#ifdef AMPLIFY_BN_MP_INIT_MULTI_C
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/* LibTomMath, multiple-precision integer library -- Tom St Denis */
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/* SPDX-License-Identifier: Unlicense */
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/* Modifications Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. */
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#include <stdarg.h>
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amplify_mp_err amplify_mp_init_multi(amplify_mp_int *mp, ...)
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{
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amplify_mp_err err = AMPLIFY_MP_OKAY; /* Assume ok until proven otherwise */
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int n = 0; /* Number of ok inits */
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amplify_mp_int *cur_arg = mp;
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va_list args;
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va_start(args, mp); /* init args to next argument from caller */
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while (cur_arg != NULL) {
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if (amplify_mp_init(cur_arg) != AMPLIFY_MP_OKAY) {
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/* Oops - error! Back-track and amplify_mp_clear what we already
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succeeded in init-ing, then return error.
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*/
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va_list clean_args;
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/* now start cleaning up */
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cur_arg = mp;
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va_start(clean_args, mp);
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while (n-- != 0) {
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amplify_mp_clear(cur_arg);
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cur_arg = va_arg(clean_args, amplify_mp_int *);
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}
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va_end(clean_args);
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err = AMPLIFY_MP_MEM;
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break;
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}
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n++;
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cur_arg = va_arg(args, amplify_mp_int *);
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}
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va_end(args);
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return err; /* Assumed ok, if error flagged above. */
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}
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#endif
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