Function sub [src]

Returns a - b, or an error on overflow.

Prototype

pub fn sub(comptime T: type, a: T, b: T) (error{Overflow}!T)

Parameters

T: typea: Tb: T

Source

  pub fn sub(comptime T: type, a: T, b: T) (error{Overflow}!T) {
    if (T == comptime_int) return a - b;
    const ov = @subWithOverflow(a, b);
    if (ov[1] != 0) return error.Overflow;
    return ov[0];
}  