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WIP: fuzzy compare for tl::Variant with float values

This commit is contained in:
Matthias Koefferlein 2023-02-21 15:57:19 +01:00
parent 80fa7e47e2
commit e709218db9
1 changed files with 15 additions and 2 deletions
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17
src/tl/tl/tlVariant.cc
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@ -27,6 +27,7 @@
#include <string.h>
#include <limits>
#include <cmath>
#if defined(HAVE_QT)
@ -1054,6 +1055,18 @@ normalized_type (Variant::type type1, Variant::type type2)
}
}
static const double epsilon = 1e-13;
static inline bool fequal (double a, double b)
{
double avg = 0.5 * (fabs (a) + fabs (b));
return fabs (a - b) < epsilon * avg;
}
static inline bool fless (double a, double b)
{
return fequal (a, b) ? false : a < b;
}
bool
Variant::operator== (const tl::Variant &d) const
@ -1083,7 +1096,7 @@ Variant::operator== (const tl::Variant &d) const
} else if (t == t_id) {
return m_var.m_id == d.m_var.m_id;
} else if (t == t_double) {
return to_double () == d.to_double ();
return fequal (to_double (), d.to_double ());
} else if (t == t_string) {
return strcmp (to_string (), d.to_string ()) == 0;
} else if (t == t_bytearray) {
@ -1139,7 +1152,7 @@ Variant::operator< (const tl::Variant &d) const
} else if (t == t_id) {
return m_var.m_id < d.m_var.m_id;
} else if (t == t_double) {
return to_double () < d.to_double ();
return fless (to_double (), d.to_double ());
} else if (t == t_string) {
return strcmp (to_string (), d.to_string ()) < 0;
} else if (t == t_bytearray) {