meta: move photon/libc to root

libc/ctype/ctype.c

@@ -0,0 +1,46 @@
+#include <stdbool.h>
+
+static unsigned int random_seed = 53455346;
+
+int isupper(int c) { return (c >= 65 && c <= 90); }
+
+int islower(int c) { return (c >= 97 && c <= 122); }
+
+int toupper(int c) {
+    if (!islower(c)) {
+        return c;
+    }
+
+    return c - 32;
+}
+
+int tolower(int c) {
+    if (!isupper(c)) {
+        return c;
+    }
+
+    return c + 32;
+}
+
+int isdigit(int c) { return (c >= 48 && c <= 57); }
+
+int isalpha(int c) { return (c >= 65 && c <= 90) || (c >= 97 && c <= 122); }
+
+int isalnum(int c) { return isalpha(c) | isdigit(c); }
+
+int iscntrl(int c) { return (c <= 31) || (c == 127); }
+
+int isprint(int c) { return (c >= 32 && c <= 126) || (c >= 128 && c <= 254); }
+
+int isgraph(int c) { return isprint(c) && c != 32; }
+
+int ispunct(int c) { return isgraph(c) && !isalnum(c); }
+
+int isspace(int c) {
+    return (c == ' ') || (c == '\t') || (c == '\n') || (c == '\v') ||
+           (c == '\f') || (c == '\r');
+}
+
+int isxdigit(int c) {
+    return isdigit(c) || (c >= 65 && c <= 70) || (c >= 97 && c <= 102);
+}