Function minInt [src]

Returns the minimum value of integer type T.

Prototype

pub fn minInt(comptime T: type) comptime_int

Parameters

T: type

Example

 test minInt {
    try testing.expect(minInt(u0) == 0);
    try testing.expect(minInt(u1) == 0);
    try testing.expect(minInt(u8) == 0);
    try testing.expect(minInt(u16) == 0);
    try testing.expect(minInt(u32) == 0);
    try testing.expect(minInt(u63) == 0);
    try testing.expect(minInt(u64) == 0);
    try testing.expect(minInt(u128) == 0);

    try testing.expect(minInt(i0) == 0);
    try testing.expect(minInt(i1) == -1);
    try testing.expect(minInt(i8) == -128);
    try testing.expect(minInt(i16) == -32768);
    try testing.expect(minInt(i32) == -2147483648);
    try testing.expect(minInt(i63) == -4611686018427387904);
    try testing.expect(minInt(i64) == -9223372036854775808);
    try testing.expect(minInt(i128) == -170141183460469231731687303715884105728);
}

Source

  pub fn minInt(comptime T: type) comptime_int {
    const info = @typeInfo(T);
    const bit_count = info.int.bits;
    if (info.int.signedness == .unsigned) return 0;
    if (bit_count == 0) return 0;
    return -(1 << (bit_count - 1));
}  