Function divExact [src]

Divide numerator by denominator. Return an error if quotient is not an integer, denominator is zero, or on overflow.

Prototype

pub fn divExact(comptime T: type, numerator: T, denominator: T) !T

Parameters

T: typenumerator: Tdenominator: T

Example

 test divExact {
    try testDivExact();
    try comptime testDivExact();
}

Source

  pub fn divExact(comptime T: type, numerator: T, denominator: T) !T {
    @setRuntimeSafety(false);
    if (denominator == 0) return error.DivisionByZero;
    if (@typeInfo(T) == .int and @typeInfo(T).int.signedness == .signed and numerator == minInt(T) and denominator == -1) return error.Overflow;
    const result = @divTrunc(numerator, denominator);
    if (result * denominator != numerator) return error.UnexpectedRemainder;
    return result;
}  