amplify-swift/AmplifyPlugins/Auth/Sources/libtommath/amplify_bn_mp_get_double.c

20 lines
571 B
C

#include "amplify_tommath_private.h"
#ifdef AMPLIFY_BN_MP_GET_DOUBLE_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
/* Modifications Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. */
double amplify_mp_get_double(const amplify_mp_int *a)
{
int i;
double d = 0.0, fac = 1.0;
for (i = 0; i < AMPLIFY_MP_DIGIT_BIT; ++i) {
fac *= 2.0;
}
for (i = a->used; i --> 0;) {
d = (d * fac) + (double)a->dp[i];
}
return (a->sign == AMPLIFY_MP_NEG) ? -d : d;
}
#endif