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Author: Pino Toscano <pino@debian.org>
Description: Stop using INT_MIN/INT_MAX for floats
.
INT_MIN/INT_MAX are meant for the int type, and thus casting them to a
different type (float) means loss of precision which may lead to failed
comparisons later on.
.
Instead use the proper limits using std::numeric_limits.
Forwarded: https://github.com/lensfun/lensfun/pull/2094
Last-Update: 2023-08-12
@@ -14,6 +14,7 @@
#include <math.h>
#include "windows/mathconstants.h"
#include <algorithm>
+#include <limits>
static struct
{
@@ -245,8 +246,8 @@ void lfLens::AddMount (const char *val)
void lfLens::GuessParameters ()
{
- float minf = float (INT_MAX), maxf = float (INT_MIN);
- float mina = float (INT_MAX), maxa = float (INT_MIN);
+ float minf = std::numeric_limits<float>::max(), maxf = std::numeric_limits<float>::min();
+ float mina = std::numeric_limits<float>::max(), maxa = std::numeric_limits<float>::min();
char *old_numeric = setlocale (LC_NUMERIC, NULL);
old_numeric = strdup (old_numeric);
@@ -325,13 +326,13 @@ void lfLens::GuessParameters ()
}
- if (minf != INT_MAX && !MinFocal)
+ if (minf != std::numeric_limits<float>::max() && !MinFocal)
MinFocal = minf;
- if (maxf != INT_MIN && !MaxFocal)
+ if (maxf != std::numeric_limits<float>::min() && !MaxFocal)
MaxFocal = maxf;
- if (mina != INT_MAX && !MinAperture)
+ if (mina != std::numeric_limits<float>::max() && !MinAperture)
MinAperture = mina;
- if (maxa != INT_MIN && !MaxAperture)
+ if (maxa != std::numeric_limits<float>::min() && !MaxAperture)
MaxAperture = maxa;
if (!MaxFocal)
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