[Issue 13474] 32 bit DMD optimizer FP arithmetic bug
via Digitalmars-d-bugs
digitalmars-d-bugs at puremagic.com
Sun Feb 8 00:05:18 PST 2015
https://issues.dlang.org/show_bug.cgi?id=13474
yebblies <yebblies at gmail.com> changed:
What |Removed |Added
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CC| |yebblies at gmail.com
--- Comment #5 from yebblies <yebblies at gmail.com> ---
Reduced:
double change(double x) { return x * 10000; }
void main()
{
double c = 0x1.388p+13;
double s = 0x1.652efdc6018a2p+345;
double t = s + 10000;
c += s - t + 10000;
s = t;
auto x = change(-1e100);
double u = s + x;
c += x - u + s;
s = u;
assert(s + c == 20000);
}
--
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