From 5289552e53d0d4874b70d652b8e7da76de27de4d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@ruby-lang.org>
Date: Thu, 21 Jan 2021 14:11:27 +0900
Subject: [PATCH] include/ruby/internal/arithmetic/pid_t.h: add doxygen

Must not be a bad idea to improve documents. [ci skip]
---
 include/ruby/internal/arithmetic/pid_t.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/ruby/internal/arithmetic/pid_t.h b/include/ruby/internal/arithmetic/pid_t.h
index 205c181fc8..df9704e8f5 100644
--- a/include/ruby/internal/arithmetic/pid_t.h
+++ b/include/ruby/internal/arithmetic/pid_t.h
@@ -23,14 +23,17 @@
 #include "ruby/internal/config.h"
 #include "ruby/internal/arithmetic/long.h"
 
+/** Converts a C's `pid_t` into an instance of ::rb_cInteger. */
 #ifndef PIDT2NUM
 # define PIDT2NUM RB_LONG2NUM
 #endif
 
+/** Converts an instance of ::rb_cNumeric into C's `pid_t`. */
 #ifndef NUM2PIDT
 # define NUM2PIDT RB_NUM2LONG
 #endif
 
+/** A rb_sprintf() format prefix to be used for a `pid_t` parameter. */
 #ifndef PRI_PIDT_PREFIX
 # define PRI_PIDT_PREFIX PRI_LONG_PREFIX
 #endif