mirrors/freetype
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Determine long long availability based on its size.

Browse Source 
MSVC, for example, used `long long` even without full C99 support.

* include/freetype/config/ftstdlib.h: Check if `long long` limits are
defined in <limits.h>.
* include/freetype/config/integer-types.h: Check `long long` size and
use it to typedef FT_Int64.
This commit is contained in:
Alexei Podtelezhnikov 2021-08-19 20:41:55 -04:00
parent 633fe08764
commit ffdac8d67e
2 changed files with 24 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
include/freetype/config/ftstdlib.h
View File

@ -43,7 +43,8 @@
*
* `UINT_MAX` and `ULONG_MAX` are used to automatically compute the size of
* `int` and `long` in bytes at compile-time. So far, this works for all
* platforms the library has been tested on.
* platforms the library has been tested on. We also check `ULLONG_MAX`
* to see if we can use 64-bit `long long` later.
*
* Note that on the extremely rare platforms that do not provide integer
* types that are _exactly_ 16 and 32~bits wide (e.g., some old Crays where
@ -66,6 +67,15 @@
#define FT_LONG_MIN LONG_MIN
#define FT_LONG_MAX LONG_MAX
#define FT_ULONG_MAX ULONG_MAX
#ifdef LLONG_MAX
#define FT_LLONG_MAX LLONG_MAX
#endif
#ifdef LLONG_MIN
#define FT_LLONG_MIN LLONG_MIN
#endif
#ifdef ULLONG_MAX
#define FT_ULLONG_MAX ULLONG_MAX
#endif
/**************************************************************************

14
include/freetype/config/integer-types.h
View File

@ -60,6 +60,18 @@
#endif /* !defined(FT_SIZEOF_LONG) */
#ifndef FT_SIZEOF_LONG_LONG
/* The size of a `long long` type if available*/
#if defined( FT_ULLONG_MAX ) && FT_ULLONG_MAX >= 0xFFFFFFFFFFFFFFFFULL
#define FT_SIZEOF_LONG_LONG ( 64 / FT_CHAR_BIT )
#else
#define FT_SIZEOF_LONG_LONG 0
#endif
#endif /* !defined(FT_SIZEOF_LONG_LONG) */
/**************************************************************************
*
* @section:
@ -180,7 +192,7 @@
#define FT_INT64 long
#define FT_UINT64 unsigned long
#elif defined( __STDC_VERSION__ ) && __STDC_VERSION__ >= 199901L
#elif FT_SIZEOF_LONG_LONG >= ( 64 / FT_CHAR_BIT )
#define FT_INT64 long long int
#define FT_UINT64 unsigned long long int