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add some sanity tests for float printing

master
Andrew Kelley 2017-10-24 21:45:00 -04:00
parent 1e784839f1
commit 73fe5f63c6
1 changed files with 32 additions and 0 deletions
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32
std/fmt/index.zig
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@ -531,6 +531,38 @@ test "fmt.format" {
const result = bufPrint(buf1[0..], "u3: {}\n", value);
assert(mem.eql(u8, result, "u3: 5\n"));
}
// TODO get these tests passing in release modes
// https://github.com/zig-lang/zig/issues/564
if (builtin.mode == builtin.Mode.Debug) {
{
var buf1: [32]u8 = undefined;
const value: f32 = 12.34;
const result = bufPrint(buf1[0..], "f32: {}\n", value);
assert(mem.eql(u8, result, "f32: 1.23400001e1\n"));
}
{
var buf1: [32]u8 = undefined;
const value: f64 = -12.34e10;
const result = bufPrint(buf1[0..], "f64: {}\n", value);
assert(mem.eql(u8, result, "f64: -1.234e11\n"));
}
{
var buf1: [32]u8 = undefined;
const result = bufPrint(buf1[0..], "f64: {}\n", math.nan_f64);
assert(mem.eql(u8, result, "f64: NaN\n"));
}
{
var buf1: [32]u8 = undefined;
const result = bufPrint(buf1[0..], "f64: {}\n", math.inf_f64);
assert(mem.eql(u8, result, "f64: Infinity\n"));
}
{
var buf1: [32]u8 = undefined;
const result = bufPrint(buf1[0..], "f64: {}\n", -math.inf_f64);
assert(mem.eql(u8, result, "f64: -Infinity\n"));
}
}
}
pub fn trim(buf: []const u8) -> []const u8 {