Add macro definitions to the tests
#define MPI_MAX_BITS_LARGER_THAN_792
#endif
+#define ciL (sizeof(mbedtls_mpi_uint)) /* chars in limb */
+#define biL (ciL << 3) /* bits in limb */
+
+/*
+ * Convert between bits/chars and number of limbs
+ * Divide first in order to avoid potential overflows
+ */
+#define BITS_TO_LIMBS(i) ( (i) / biL + ( (i) % biL != 0 ) )
+#define CHARS_TO_LIMBS(i) ( (i) / ciL + ( (i) % ciL != 0 ) )
+
/* Check the validity of the sign bit in an MPI object. Reject representations
* that are not supported by the rest of the library and indicate a bug when
* constructing the value. */
