Exp mod: handle negative zero
Signed-off-by: Janos Follath <janos.follath@arm.com>
diff --git a/tests/suites/test_suite_bignum.misc.data b/tests/suites/test_suite_bignum.misc.data
index 8f5218c..a953153 100644
--- a/tests/suites/test_suite_bignum.misc.data
+++ b/tests/suites/test_suite_bignum.misc.data
@@ -1362,6 +1362,9 @@
Test mbedtls_mpi_exp_mod: 10 ^ 0 (1 limb) mod 9
mpi_exp_mod:"0a":"00":"09":"1":0
+Test mbedtls_mpi_exp_mod: -3 ^ 3 mod 27
+mpi_exp_mod:"-3":"3":"1b":"1b":0
+
Test mbedtls_mpi_exp_mod: MAX_SIZE exponent
mpi_exp_mod_size:2:MBEDTLS_MPI_MAX_SIZE:10:"":0