_POSIX_C_SOURCE是一个宏定义，用于指定编译器应该符合的特定版本的POSIX标准。具体来说，_POSIX_C_SOU...
POSIX.1-2008 準拠アプリケーションとして設計されたアプリケーションは、いずれかのヘッダーをインクルードする前に、機能テストマクロ _POSIX_C_SOURCE=200809L を定義する必要があります。アプリケーション作成者は、標準を確認して、目的のオプションが実装によってサポートされているか...
No new language to learn -- C code in, shell code out. The human-readable shell script is easy to read and understand. A runtime library including file I/O and dynamic memory allocations. A preprocessor (#include, #ifdef, #define MACRO ..., #define MACRO_F(x) ...). Integrates eas...
If the compiler supports the redefine_extname pragma feature, the Oracle Developer Studio C Compiler and C++ Compiler define the macro __PRAGMA_REDEFINE_EXTNAME to indicate that they support this feature.前述の条件が満たされた場合、標準ヘッダーは #pragma redefine_extname ディレクティブを使って...
The source assumes that for Windows NT, the macro 'MS_WINDOWS' is defined independent of the compiler used. Different compilers define their own feature test macro, e.g. '_MSC_VER'. */ // --- Python includes --- #include "Python.h" #ifdef __VXWORKS__ # include "pycore_bitu...
宏:可能会有人对宏没概念,简单说明下,我们在计算机领域说的宏(Macro),是批量处理的一个说法。宏是一种通过某种指定规则来处理数据的过程,可以称之为语法替换(大家应该在编辑器里匹配替换过数据,但这这里要复杂点),这里不同数据替换,宏是获取某种输入(通常是字符串),然后如何根据事先定义的规则,转换成对应的输出...
Feature Test Macro Requirements for glibc (see feature_test_macros(7)): timer_create(): _POSIX_C_SOURCE >= 199309L DESCRIPTIONtimer_create() creates a new per-process interval timer. The ID of the new timer is returned in the buffer pointed to by timerid, which must be a non-null...
NAME timer_create - create a POSIX per-process timer SYNOPSIS #include<signal.h>#include<time.h>inttimer_create(clockid_tclockid,structsigevent*sevp,timer_t*timerid);Link with-lrt. Feature Test Macro Requirements for glibc (seefeature_test_macros(7)):timer_create(): _POSIX_C_SOURCE >= ...
in a macro that can be changed at configure time. If REG_NOSUB was specified at compile time, the PCRE_NO_AUTO_CAPTURE flag will be set. When this is the case, the nmatch and pmatch arguments are ignored, and the only result is yes/no/error. */ PCREPOSIX_EXP_DEFN int PCRE...
If you want to add or isolate features specific to INTERIX, you can surround it with a #ifdef__INTERIX. This macro is automatically defined byccandc89. Macros in INTERIX POSIX.1 defines a macro_POSIX_SOURCE that tightly controls the namespace. Don't use it. ...