diff options
Diffstat (limited to 'src/corelib/global/qtypes.h')
| -rw-r--r-- | src/corelib/global/qtypes.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/corelib/global/qtypes.h b/src/corelib/global/qtypes.h index 6a4b6acf39..cca2263901 100644 --- a/src/corelib/global/qtypes.h +++ b/src/corelib/global/qtypes.h @@ -67,7 +67,20 @@ typedef quint64 qulonglong; #if defined(QT_SUPPORTS_INT128) __extension__ typedef __int128_t qint128; __extension__ typedef __uint128_t quint128; -#endif + +// limits: +# ifdef __cplusplus /* need to avoid c-style-casts in C++ mode */ +# define QT_C_STYLE_CAST(type, x) static_cast<type>(x) +# else /* but C doesn't have constructor-style casts */ +# define QT_C_STYLE_CAST(type, x) ((type)x) +# endif +# ifndef Q_UINT128_MAX /* allow qcompilerdetection.h/user override */ +# define Q_UINT128_MAX QT_C_STYLE_CAST(quint128, -1) +# endif +# define Q_INT128_MAX QT_C_STYLE_CAST(qint128, (Q_UINT128_MAX / 2)) +# define Q_INT128_MIN (-Q_INT128_MAX - 1) + +#endif // QT_SUPPORTS_INT128 #ifndef __cplusplus // In C++ mode, we define below using QIntegerForSize template |