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LibM: Make roundf() and ceilf() slightly less terrible

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These implementations still don't handle all of the corner cases that
are possible, but at least they are somewhat usable now.
This commit is contained in:
Andreas Kling 2019-10-20 13:55:57 +02:00
parent 138abb9098
commit 570c6c8458
1 changed files with 10 additions and 4 deletions
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14
Libraries/LibM/math.cpp
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@ -276,14 +276,20 @@ long double frexpl(long double, int*)
float roundf(float value)
{
// FIXME: Please fix me. I am sad.
return (int)value;
// FIXME: Please fix me. I am naive.
if (value >= 0.0f)
return (float)(int)(value + 0.5f);
return (float)(int)(value - 0.5f);
}
float ceilf(float value)
{
// FIXME: Please fix me. I am sad.
return (int)value;
// FIXME: Please fix me. I am naive.
int as_int = (int)value;
if (value == (float)as_int) {
return (float)as_int;
}
return as_int + 1;
}
}