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Fix edge case in addXf3

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The operands may be zero, use the wrapping operators and avoid a
spurious integer-overflow error.
This commit is contained in:
LemonBoy 2019-05-06 21:41:08 +02:00
parent 60242e96df
commit 939ec878a0
1 changed files with 2 additions and 2 deletions
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4
std/special/compiler_rt/addXf3.zig
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@ -78,8 +78,8 @@ fn addXf3(comptime T: type, a: T, b: T) T {
const infRep = @bitCast(Z, std.math.inf(T));
// Detect if a or b is zero, infinity, or NaN.
if (aAbs - Z(1) >= infRep - Z(1) or
bAbs - Z(1) >= infRep - Z(1))
if (aAbs -% Z(1) >= infRep - Z(1) or
bAbs -% Z(1) >= infRep - Z(1))
{
// NaN + anything = qNaN
if (aAbs > infRep) return @bitCast(T, @bitCast(Z, a) | quietBit);