Category
Pragma equivalent
#pragma options [no]longlong
Purpose
Allows IBM long long integer types in your program.
Defaults
-qlonglong for the xlc, xlc++, xlC, cc and c99 invocation commands; -qnolonglong for the c89 invocation command.
-qlonglong for the -qlanglvl= compat366 | extended option; -qnolonglong for the -qlanglvl=strict98
| extended0x option. When multiple -qlanglvl options that imply -q[no]longlong or actual -q[no]longlong options are specified, the last specified
option determines whether -qlonglong is in effect.
Usage
This
option takes effect when the -qlanglvl=extended | stdc89
| extc89 option is in effect. It is not valid when the -qlanglvl=stdc99 | extc99 option is in effect, because
the long long support provided by this option is
incompatible with the semantics of the long long types
mandated by the C99 standard.
This option does not take effect when the -qlanglvl=c99longlong option is in effect, because the long long support provided by this option is incompatible
with the semantics of the long long types mandated
by the C99 standard as adopted in C++0x.
Predefined macros
_LONG_LONG is defined to 1 when long long data types are available; otherwise, it is undefined.
Examples
To compile myprogram.c with support for IBM long long integers, enter:
cc myprogram.c -qlonglongAIX
v4.2 and later provides support for files greater than 2 gigabytes
in size so you can store large quantities of data in a single file.
To allow large file manipulation in your application, compile with
the -D_LARGE_FILES and -qlonglong compiler options.
For example:
xlc myprogram.c -D_LARGE_FILES -qlonglong