Merge pull request #13 from ProjectRevoTPP/libc

add libc building to agbcc.

1 files changed, 60 insertions, 0 deletions

diff --git a/libc/ctype/isprint.c b/libc/ctype/isprint.c
new file mode 100644
index 0000000..2ff00f4
--- /dev/null
+++ b/libc/ctype/isprint.c
@@ -0,0 +1,60 @@
+
+/*
+FUNCTION
+	<<isprint>>, <<isgraph>>---printable character predicates
+
+INDEX
+	isprint
+INDEX
+	isgraph
+
+ANSI_SYNOPSIS
+	#include <ctype.h>
+	int isprint(int <[c]>);
+	int isgraph(int <[c]>);
+
+TRAD_SYNOPSIS
+	#include <ctype.h>
+	int isprint(<[c]>);
+	int isgraph(<[c]>);
+
+
+DESCRIPTION
+<<isprint>> is a macro which classifies ASCII integer values by table
+lookup.  It is a predicate returning non-zero for printable
+characters, and 0 for other character arguments. 
+It is defined only when <<isascii>>(<[c]>) is true or <[c]> is EOF.
+
+You can use a compiled subroutine instead of the macro definition by
+undefining either macro using `<<#undef isprint>>' or `<<#undef isgraph>>'.
+
+RETURNS
+<<isprint>> returns non-zero if <[c]> is a printing character,
+(<<0x20>>--<<0x7E>>).
+<<isgraph>> behaves identically to <<isprint>>, except that the space
+character (<<0x20>>) is excluded.
+
+PORTABILITY
+<<isprint>> and <<isgraph>> are ANSI C.
+
+No supporting OS subroutines are required.
+*/
+
+#include <_ansi.h>
+#include <ctype.h>
+
+#undef isgraph
+int
+_DEFUN(isgraph,(c),int c)
+{
+	return((_ctype_ + 1)[c] & (_P|_U|_L|_N));
+}
+
+
+#undef isprint
+int
+_DEFUN(isprint,(c),int c)
+{
+	return((_ctype_ + 1)[c] & (_P|_U|_L|_N|_B));
+}
+