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Add test generation for mpi_core_sub

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Signed-off-by: Werner Lewis <werner.lewis@arm.com>
This commit is contained in:
Werner Lewis 2022-09-30 16:33:11 +01:00
parent ce769d1fc9
commit 6351c7f5f3
1 changed files with 21 additions and 0 deletions
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21
scripts/mbedtls_dev/bignum_core.py
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@ -89,3 +89,24 @@ class BignumCoreAddIf(BignumCoreOperation):
return "\"{:x}\":{}:\"{:x}\":{}".format(
remainder_4, carry_4, remainder_8, carry_8
)
class BignumCoreSub(BignumCoreOperation):
"""Test cases for bignum core sub."""
count = 0
symbol = "-"
test_function = "mpi_core_sub"
test_name = "mbedtls_mpi_core_sub"
def result(self) -> str:
if self.int_a >= self.int_b:
result_4 = result_8 = self.int_a - self.int_b
carry = 0
else:
bound_val = max(self.int_a, self.int_b)
bound_4 = bignum_common.bound_mpi4(bound_val)
result_4 = bound_4 + self.int_a - self.int_b
bound_8 = bignum_common.bound_mpi8(bound_val)
result_8 = bound_8 + self.int_a - self.int_b
carry = 1
return "\"{:x}\":\"{:x}\":{}".format(result_4, result_8, carry)