fix(interpreter): keep 2^63 as a float in floor, ceil and round

packages/interpreter/tests/program_eval_test.zigmodified+17-0

Changes to packages/interpreter/tests/program_eval_test.zig

		⋯45 linesShow the 45 lines above this hunk@@ -46,6 +46,23 @@ test "eval: print a string literal (hello world)" {
46	46	);
47	47	}
48	48
	49	+test "eval: floor, ceil and round keep 2^63 as a float" {
	50	+ try runProgram(
	51	+ \\fn main() {
	52	+ \\ let max = 9223372036854775807.0
	53	+ \\ assert(is_float(floor(max)))
	54	+ \\ assert(is_float(ceil(max)))
	55	+ \\ assert(is_float(round(max)))
	56	+ \\ assert(is_int(floor(9223372036854774784.0)))
	57	+ \\ assert(floor(9223372036854774784.0) == 9223372036854774784)
	58	+ \\ assert(is_int(ceil(-9223372036854775808.0)))
	59	+ \\ assert(ceil(-9223372036854775808.0) == -9223372036854775807 - 1)
	60	+ \\ assert(is_int(round(2.5)))
	61	+ \\ assert(round(2.5) == 3)
	62	+ \\}
	63	+ );
	64	+}
	65	+
49	66	test "eval: let-binding then use" {
50	67	try runProgram(
51	68	\\fn main() {