X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=rpikern;a=blobdiff_plain;f=src%2Flibc%2Fctype.c;fp=src%2Flibc%2Fctype.c;h=9676441e6d2bcc4771424b114f49268e71594882;hp=0000000000000000000000000000000000000000;hb=36f1048dfeec94c6f305b76082fecec93347b2ec;hpb=993155fee2327f1f3cda285c9548bbb09688a3f3

diff --git a/src/libc/ctype.c b/src/libc/ctype.c
new file mode 100644
index 0000000..9676441
--- /dev/null
+++ b/src/libc/ctype.c
@@ -0,0 +1,56 @@
+#include "ctype.h"
+
+int isalnum(int c)
+{
+	return isalpha(c) || isdigit(c);
+}
+
+int isalpha(int c)
+{
+	return isupper(c) || islower(c);
+}
+
+int isblank(int c)
+{
+	return c == ' ' || c == '\t';
+}
+
+int isdigit(int c)
+{
+	return c >= '0' && c <= '9';
+}
+
+int isupper(int c)
+{
+	return c >= 'A' && c <= 'Z';
+}
+
+int islower(int c)
+{
+	return c >= 'a' && c <= 'z';
+}
+
+int isgraph(int c)
+{
+	return c > ' ' && c <= '~';
+}
+
+int isprint(int c)
+{
+	return isgraph(c) || c == ' ';
+}
+
+int isspace(int c)
+{
+	return isblank(c) || c == '\f' || c == '\n' || c == '\r' || c == '\v';
+}
+
+int toupper(int c)
+{
+	return islower(c) ? (c + ('A' - 'a')) : c;
+}
+
+int tolower(int c)
+{
+	return isupper(c) ? (c + ('A' - 'a')) : c;
+}