X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fctype%2Fisspace.c;fp=functions%2Fctype%2Fisspace.c;h=346167efc22cad6909d575bb7a6b7a3db1478ed5;hb=5bcc00c1b85feff1996e3f34a1a9ebf3b624161e;hp=0000000000000000000000000000000000000000;hpb=68525aefa7b7b1f2f769e287e1f2f3a4585005ff;p=pdclib

diff --git a/functions/ctype/isspace.c b/functions/ctype/isspace.c
new file mode 100644
index 0000000..346167e
--- /dev/null
+++ b/functions/ctype/isspace.c
@@ -0,0 +1,47 @@
+/* $Id$ */
+
+/* isspace( int )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <ctype.h>
+#include <stdbool.h>
+
+#ifndef REGTEST
+
+int isspace( int c )
+{
+    switch ( c )
+    {
+        case ' ':
+        case '\f':
+        case '\n':
+        case '\r':
+        case '\t':
+        case '\v':
+            return true;
+        default:
+            return false;
+    }
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    TESTCASE( isspace( ' ' ) );
+    TESTCASE( isspace( '\f' ) );
+    TESTCASE( isspace( '\n' ) );
+    TESTCASE( isspace( '\r' ) );
+    TESTCASE( isspace( '\t' ) );
+    TESTCASE( isspace( '\v' ) );
+    TESTCASE( ! isspace( 'a' ) );
+    return TEST_RESULTS;
+}
+
+#endif