Function SIValue_Modulo

src/value.c:515–531

Calculate a mod n for integer and floating-point inputs.

// Calculate a mod n for integer and floating-point inputs.
SIValue SIValue_Modulo(const SIValue a, const SIValue n) {
	bool inputs_are_integers = SI_TYPE(a) & SI_TYPE(n) & T_INT64;
	if(inputs_are_integers) {
		// The modulo machine instruction may be used if a and n are both integers.

		int64_t res = 0;
		// workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=30484
		if (n.longval != -1){ // % -1 is always return 0
			res = (int64_t)a.longval % (int64_t)n.longval;
		}

		return SI_LongVal(res);
	} else {
		// Otherwise, use the library function fmod to calculate the modulo and return a double.
		return SI_DoubleVal(fmod(SI_GET_NUMERIC(a), SI_GET_NUMERIC(n)));
	}
}

int SIArray_Compare(SIValue arrayA, SIValue arrayB, int *disjointOrNull) {
	uint arrayALen = SIArray_Length(arrayA);