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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
commit | cca66b9ec4e494c1d919bff0f71a820d8afab1fa (patch) | |
tree | 146f39ded1c938019e1ed42d30923c2ac9e86789 /src/3rdparty/autotrace/epsilon-equal.c | |
parent | Initial commit. (diff) | |
download | inkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.tar.xz inkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.zip |
Adding upstream version 1.2.2.upstream/1.2.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/3rdparty/autotrace/epsilon-equal.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/3rdparty/autotrace/epsilon-equal.c b/src/3rdparty/autotrace/epsilon-equal.c new file mode 100644 index 0000000..8d26886 --- /dev/null +++ b/src/3rdparty/autotrace/epsilon-equal.c @@ -0,0 +1,22 @@ +/* epsilon-equal.c: define a error resist compare. */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif /* Def: HAVE_CONFIG_H */ + +#include "types.h" +#include "epsilon-equal.h" +#include <math.h> + +/* Numerical errors sometimes make a floating point number just slightly + larger or smaller than its TRUE value. When it matters, we need to + compare with some tolerance, REAL_EPSILON, defined in kbase.h. */ + +gboolean epsilon_equal(gfloat v1, gfloat v2) +{ + if (v1 == v2 /* Usually they'll be exactly equal, anyway. */ + || fabs(v1 - v2) <= REAL_EPSILON) + return TRUE; + + return FALSE; +} |