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| author | Emmanuele Bassi <ebassi@gnome.org> | 2017-02-08 17:34:23 +0000 |
|---|---|---|
| committer | Emmanuele Bassi <ebassi@gnome.org> | 2018-05-29 09:55:47 +0100 |
| commit | 24e98e38d616f64d68c86747dc38e657145bf38b (patch) | |
| tree | 137198fb9e51906b8f17d6536ed5c679b84c844b /glib/gmacros.h | |
| parent | 61ccf733ccf1f64760553f6915fc7264ca1af1d6 (diff) | |
| download | glib-24e98e38d616f64d68c86747dc38e657145bf38b.tar.gz | |
Add a macro for checking approximate values
A macro like this is useful to avoid direct comparisons between floating
point values.
https://gitlab.gnome.org/GNOME/glib/issues/914
Diffstat (limited to 'glib/gmacros.h')
| -rw-r--r-- | glib/gmacros.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/glib/gmacros.h b/glib/gmacros.h index 0e180bb09..cfeb9a00b 100644 --- a/glib/gmacros.h +++ b/glib/gmacros.h @@ -329,6 +329,9 @@ #undef CLAMP #define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x))) +#define G_APPROX_VALUE(a, b, epsilon) \ + (((a) > (b) ? (a) - (b) : (b) - (a)) < (epsilon)) + /* Count the number of elements in an array. The array must be defined * as such; using this with a dynamically allocated array will give * incorrect results. |