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add testcase of #118

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This commit is contained in:
Steffen Jaeckel 2018-09-22 16:36:56 +02:00
parent cbe30703ef
commit a829b87b00
1 changed files with 31 additions and 0 deletions
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31
demo/demo.c
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@ -382,6 +382,37 @@ int main(void)
}
}
// mp_invmod corner-case of https://github.com/libtom/libtommath/issues/118
printf("\n\nTesting: mp_invmod");
{
const char *a_ = "47182BB8DF0FFE9F61B1F269BACC066B48BA145D35137D426328DC3F88A5EA44";
const char *b_ = "FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF";
const char *should_ = "0521A82E10376F8E4FDEF9A32A427AC2A0FFF686E00290D39E3E4B5522409596";
if (mp_read_radix(&a, a_, 16) != MP_OKAY) {
printf("\nmp_read_radix(a) failed!");
return EXIT_FAILURE;
}
if (mp_read_radix(&b, b_, 16) != MP_OKAY) {
printf("\nmp_read_radix(b) failed!");
return EXIT_FAILURE;
}
if (mp_read_radix(&c, should_, 16) != MP_OKAY) {
printf("\nmp_read_radix(should) failed!");
return EXIT_FAILURE;
}
if (mp_invmod(&a, &b, &d) != MP_OKAY) {
printf("\nmp_invmod() failed!");
return EXIT_FAILURE;
}
if (mp_cmp(&c, &d) != MP_EQ) {
printf("\nmp_invmod() bad result!");
return EXIT_FAILURE;
}
}
// test mp_get_int
printf("\n\nTesting: mp_get_int");
for (i = 0; i < 1000; ++i) {