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| author | Chun-wei Fan <fanchunwei@src.gnome.org> | 2018-03-12 13:33:03 +0800 |
|---|---|---|
| committer | Behdad Esfahbod <behdad@behdad.org> | 2018-03-23 15:52:33 -0700 |
| commit | 19256bef9d264f96187261929992b96e61fa43fd (patch) | |
| tree | b44971159567a7063532666ae565a802bb722453 | |
| parent | 95f0458f44e9a7ec250f1bc7d9f060745dbabcf3 (diff) | |
hb-private.hh: Add fallback implementation for round()
For pre-C99 compilers that do not support round(), we need to have a
simplistic implementation for it, when it is not detected during build
configuration, either via CMake or autotools, by using floor() and
ceil(), which are provided in the pre-C99 compilers.
Please see discussion at commit 86a0ac2 for more details for re-adding
this patch.
| -rw-r--r-- | src/hb-private.hh | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/hb-private.hh b/src/hb-private.hh index daa496e9..62a103cf 100644 --- a/src/hb-private.hh +++ b/src/hb-private.hh @@ -1070,4 +1070,17 @@ struct hb_string_t }; +/* fallback for round() */ +#if !defined (HAVE_ROUND) && !defined (HAVE_DECL_ROUND) +static inline double +round (double x) +{ + if (x >= 0) + return floor (x + 0.5); + else + return ceil (x - 0.5); +} +#endif + + #endif /* HB_PRIVATE_HH */ |