// types — integer limits and helpers, the seed module that the
// rest of the stdlib depends on. Plan 9-flavoured: the names are
// short and the constants are platform-fixed (we are amd64 only).

def I8_MAX:  i8  = 127;
def I16_MAX: i16 = 32767;
def I32_MAX: i32 = 2147483647;
def I64_MAX: i64 = 9223372036854775807;

def I8_MIN:  i8  = -128;
def I16_MIN: i16 = -32768;
def I32_MIN: i32 = -2147483648;
def I64_MIN: i64 = -9223372036854775808;

def U8_MAX:  u8  = 255;
def U16_MAX: u16 = 65535;
def U32_MAX: u32 = 4294967295;
def U64_MAX: u64 = 18446744073709551615;

export fn min_i32(a: i32, b: i32) i32 = {
	if (a < b) { return a; };
	return b;
};

export fn max_i32(a: i32, b: i32) i32 = {
	if (a > b) { return a; };
	return b;
};

export fn min_i64(a: i64, b: i64) i64 = {
	if (a < b) { return a; };
	return b;
};

export fn max_i64(a: i64, b: i64) i64 = {
	if (a > b) { return a; };
	return b;
};

export fn abs_i32(x: i32) i32 = {
	if (x < 0) { return -x; };
	return x;
};

export fn abs_i64(x: i64) i64 = {
	if (x < 0) { return -x; };
	return x;
};