X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=includes%2Fctype.h;h=061e3575ada8f9e7cb7db5189603deab54993d32;hb=b1fc26afebd4d557ff89a44bc21767a8704c3809;hp=a4ac53449bfd52e529860d95358dbe24ccf7d24e;hpb=0fa6394bc70eab55e0e38703a31a3072232c0729;p=pdclib

diff --git a/includes/ctype.h b/includes/ctype.h
index a4ac534..061e357 100644
--- a/includes/ctype.h
+++ b/includes/ctype.h
@@ -1,6 +1,4 @@
-/* $Id$ */
-
-/* 7.4 Character handling <ctype.h>
+/* Character handling <ctype.h>
 
    This file is part of the Public Domain C Library (PDCLib).
    Permission is granted to use, modify, and / or redistribute at will.
@@ -9,6 +7,8 @@
 #ifndef _PDCLIB_CTYPE_H
 #define _PDCLIB_CTYPE_H _PDCLIB_CTYPE_H
 
+#include <_PDCLIB_int.h>
+
 /* Character classification functions */
 
 /* Note that there is a difference between "whitespace" (any printing, non-
@@ -29,15 +29,15 @@ int isalnum( int c );
 */
 int isalpha( int c );
 
-/* Returns true if the character is a whitespace. In the "C" locale, only ' '
-   and '\t' are considered whitespace.
+/* Returns true if the character isspace() and used for seperating words within
+   a line of text. In the "C" locale, only ' ' and '\t' are considered blanks.
 */
 int isblank( int c );
 
 /* Returns true if the character is a control character. */
 int iscntrl( int c );
 
-/* Returns true if the character is a decimal digit. */
+/* Returns true if the character is a decimal digit. Locale-independent. */
 int isdigit( int c );
 
 /* Returns true for every printing character except space (' '). */
@@ -75,7 +75,7 @@ int isspace( int c );
 */
 int isupper( int c );
 
-/* Returns true for any hexadecimal-digit character. */
+/* Returns true for any hexadecimal-digit character. Locale-independent. */
 int isxdigit( int c );
 
 /* Character case mapping functions */
@@ -83,11 +83,11 @@ int isxdigit( int c );
 /* Converts an uppercase letter to a corresponding lowercase letter. Input that
    is not an uppercase letter remains unchanged.
 */
-int tolower( c );
+int tolower( int c );
 
 /* Converts a lowercase letter to a corresponding uppercase letter. Input that
    is not a lowercase letter remains unchanged.
 */
-int toupper( c );
+int toupper( int c );
 
 #endif