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replace use of round() with modf()

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svn: r7465
This commit is contained in:
Matthew Flatt 2007-10-09 14:46:13 +00:00
parent 58a2b906a1
commit 375b356eb7
2 changed files with 32 additions and 6 deletions
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19
src/mred/wxs/wxs_dc.cxx
View File

@ -557,6 +557,19 @@ static inline double approx_dist(double x, double y)
return ((x < y) ? y : x);
}
static double my_round(double f)
/* doesn't have to deal with negtive numbers */
{
double d, frac;
frac = modf(f, &d);
if (frac >= 0.5)
d += 1.0;
return d;
}
static void ScaleSection(wxMemoryDC *dest, wxBitmap *src,
double tx, double ty, double ww2, double hh2,
double fx, double fy, double ww, double hh,
@ -698,9 +711,9 @@ static void ScaleSection(wxMemoryDC *dest, wxBitmap *src,
b = (b * (1 - a)) + ((double)s2[p+3] * a);
}
s2[p+1] = (int)round(r);
s2[p+2] = (int)round(g);
s2[p+3] = (int)round(b);
s2[p+1] = (int)my_round(r);
s2[p+2] = (int)my_round(g);
s2[p+3] = (int)my_round(b);
}
}

19
src/mred/wxs/wxs_dc.xc
View File

@ -423,6 +423,19 @@ static inline double approx_dist(double x, double y)
return ((x < y) ? y : x);
}
static double my_round(double f)
/* doesn't have to deal with negtive numbers */
{
double d, frac;
frac = modf(f, &d);
if (frac >= 0.5)
d += 1.0;
return d;
}
static void ScaleSection(wxMemoryDC *dest, wxBitmap *src,
double tx, double ty, double ww2, double hh2,
double fx, double fy, double ww, double hh,
@ -564,9 +577,9 @@ static void ScaleSection(wxMemoryDC *dest, wxBitmap *src,
b = (b * (1 - a)) + ((double)s2[p+3] * a);
}
s2[p+1] = (int)round(r);
s2[p+2] = (int)round(g);
s2[p+3] = (int)round(b);
s2[p+1] = (int)my_round(r);
s2[p+2] = (int)my_round(g);
s2[p+3] = (int)my_round(b);
}
}