zig/test/cases/bitcast.zig

const assert = @import("std").debug.assert;

test "@bitCast i32 -> u32" {
    testBitCast_i32_u32();
    comptime testBitCast_i32_u32();
}

fn testBitCast_i32_u32() void {
    assert(conv(-1) == @maxValue(u32));
    assert(conv2(@maxValue(u32)) == -1);
}

fn conv(x: i32) u32 {
    return @bitCast(u32, x);
}
fn conv2(x: u32) i32 {
    return @bitCast(i32, x);
}
partial implementation of printing floating point numbers with errol3 also add bitCast builtin function. closes #387 2017-06-07 19:56:57 -07:00			`const assert = @import("std").debug.assert;`

			`test "@bitCast i32 -> u32" {`
			`testBitCast_i32_u32();`
			`comptime testBitCast_i32_u32();`
			`}`

syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.\)-> /\1/g' $(find . -name ".zig") ``` add void: ``` sed -i 's/\(\bfn\b.\))\s{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work. 2018-01-25 01:10:11 -08:00			`fn testBitCast_i32_u32() void {`
partial implementation of printing floating point numbers with errol3 also add bitCast builtin function. closes #387 2017-06-07 19:56:57 -07:00			`assert(conv(-1) == @maxValue(u32));`
			`assert(conv2(@maxValue(u32)) == -1);`
			`}`

[breaking] delete ptr deref prefix op start using zig-fmt-pointer-reform branch build of zig fmt to fix code to use the new syntax all of test/cases/* are processed, but there are more left to be done - all the std lib used by the behavior tests 2018-04-30 17:35:54 -07:00			`fn conv(x: i32) u32 {`
			`return @bitCast(u32, x);`
			`}`
			`fn conv2(x: u32) i32 {`
			`return @bitCast(i32, x);`
			`}`