Commit 97ced1272df0236a01a72deaaf55e895f2bf62b0 | zig

author	Jacob Young <jacobly@ziglang.org> 2026-08-03 20:53:56-04:00
committer	Jacob Young <jacobly@ziglang.org> 2026-08-03 21:04:04-04:00
log	97ced1272df0236a01a72deaaf55e895f2bf62b0
tree	fb36416ab1472743f7e48e75ecbfa1357641652b
parent	4b726207b8eb5a8a0605f3cc164ff0364733c31b

std.math.float: evaluate some constants at comptime

QEMU can mistranslate this code, but since it can be evaluated at
comptime anyway, force comptime eval as both a workaround for the
mistranslation and because it is a desirable change anyway.

1 files changed, 3 insertions(+), 3 deletions(-)

lib
- std
  - math
    float.zig

lib/std/math/float.zig+3-3

...	...	@@ -112,17 +112,17 @@ pub fn FloatRepr(comptime Float: type) type {
112	112	/// This currently truncates denormal values, which needs to be fixed before this can be used to
113	113	/// produce a rounded value.
114	114	pub fn reconstruct(normalized: Normalized, sign: std.math.Sign) Float {
115		if (normalized.exponent > BiasedExponent.max_normal.unbias()) return @bitCast(Repr{
	115	if (normalized.exponent > comptime BiasedExponent.max_normal.unbias()) return @bitCast(Repr{
116	116	.mantissa = 0,
117	117	.exponent = .infinite,
118	118	.sign = sign,
119	119	});
120	120	const mantissa = @as(Mantissa, 1 << fractional_bits) \| normalized.fraction;
121		if (normalized.exponent < BiasedExponent.min_normal.unbias()) return @bitCast(Repr{
	121	if (normalized.exponent < comptime BiasedExponent.min_normal.unbias()) return @bitCast(Repr{
122	122	.mantissa = @truncate(std.math.shr(
123	123	Mantissa,
124	124	mantissa,
125		BiasedExponent.min_normal.unbias() - normalized.exponent,
	125	(comptime BiasedExponent.min_normal.unbias()) - normalized.exponent,
126	126	)),
127	127	.exponent = .denormal,
128	128	.sign = sign,