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-rw-r--r--include/ruby/internal/arithmetic/gid_t.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/ruby/internal/arithmetic/gid_t.h b/include/ruby/internal/arithmetic/gid_t.h
index 094fc63092..361220bfab 100644
--- a/include/ruby/internal/arithmetic/gid_t.h
+++ b/include/ruby/internal/arithmetic/gid_t.h
@@ -17,20 +17,23 @@
* recursively included from extension libraries written in C++.
* Do not expect for instance `__VA_ARGS__` is always available.
* We assume C99 for ruby itself but we don't assume languages of
- * extension libraries. They could be written in C++98.
+ * extension libraries. They could be written in C++98.
* @brief Arithmetic conversion between C's `gid_t` and Ruby's.
*/
#include "ruby/internal/config.h"
#include "ruby/internal/arithmetic/long.h"
+/** Converts a C's `gid_t` into an instance of ::rb_cInteger. */
#ifndef GIDT2NUM
# define GIDT2NUM RB_LONG2NUM
#endif
+/** Converts an instance of ::rb_cNumeric into C's `gid_t`. */
#ifndef NUM2GIDT
# define NUM2GIDT RB_NUM2LONG
#endif
+/** A rb_sprintf() format prefix to be used for a `gid_t` parameter. */
#ifndef PRI_GIDT_PREFIX
# define PRI_GIDT_PREFIX PRI_LONG_PREFIX
#endif