Function calcLimbLen [src]

Returns the number of limbs needed to store scalar, which must be a primitive integer value. Note: A comptime-known upper bound of this value that may be used instead if scalar is not already comptime-known is calcTwosCompLimbCount(@typeInfo(@TypeOf(scalar)).int.bits)

Prototype

pub fn calcLimbLen(scalar: anytype) usize

Source

  pub fn calcLimbLen(scalar: anytype) usize {
    if (scalar == 0) {
        return 1;
    }

    const w_value = @abs(scalar);
    return @as(usize, @intCast(@divFloor(@as(Limb, @intCast(math.log2(w_value))), limb_bits) + 1));
}  