BeeEngine/glslang-zig
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Constant.cpp Floating point divide by zero

Browse source 
Constant.cpp will throw a floating point divide by zero if floating point exceptions are enabled in Win32 causing the program to crash. This fix manually checks the right-hand argument of the division and sets appropriate Infinity, Negative Infinity, or NAN as if the floating point exceptions were disabled.
This commit is contained in:
Haydn Trigg 2018-06-29 13:55:06 -04:00 • committed by GitHub
parent 0b964b3c35
commit e826286f99
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 21 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

22
glslang/MachineIndependent/Constant.cpp
View file

@ -179,7 +179,27 @@ TIntermTyped* TIntermConstantUnion::fold(TOperator op, const TIntermTyped* right
case EbtDouble: case EbtDouble:
case EbtFloat: case EbtFloat:
case EbtFloat16: case EbtFloat16:
newConstArray[i].setDConst(leftUnionArray[i].getDConst() / rightUnionArray[i].getDConst()); {
auto right = rightUnionArray[i].getDConst();
auto left = leftUnionArray[i].getDConst();
if (right)
{
newConstArray[i].setDConst(left / right);
}
else if (left > 0)
{
newConstArray[i].setDConst((double)INFINITY);
}
else if (left < 0)
{
newConstArray[i].setDConst((double)-INFINITY);
}
else
{
newConstArray[i].setDConst((double)NAN);
}
}
break; break;
case EbtInt8: case EbtInt8:
if (rightUnionArray[i] == (signed char)0) if (rightUnionArray[i] == (signed char)0)