From 92b4f1b83af03ec0760800c20aedb0c67bc818bb Mon Sep 17 00:00:00 2001
From: Gitea <gitea@fake.local>
Date: Sun, 13 Dec 2020 04:55:41 -0600
Subject: [PATCH] Initial ascii-only versions

---
 ctype/isalnum.c  |  5 +++++
 ctype/isalpha.c  |  5 +++++
 ctype/isascii.c  |  5 +++++
 ctype/isblank.c  |  5 +++++
 ctype/iscntrl.c  |  5 +++++
 ctype/isdigit.c  |  5 +++++
 ctype/isgraph.c  |  5 +++++
 ctype/islower.c  |  5 +++++
 ctype/isprint.c  |  5 +++++
 ctype/ispunct.c  |  5 +++++
 ctype/isspace.c  | 13 +++++++++++++
 ctype/isupper.c  |  5 +++++
 ctype/isxdigit.c |  5 +++++
 ctype/toascii.c  |  5 +++++
 ctype/tolower.c  |  5 +++++
 ctype/toupper.c  |  5 +++++
 16 files changed, 88 insertions(+)
 create mode 100644 ctype/isalnum.c
 create mode 100644 ctype/isalpha.c
 create mode 100644 ctype/isascii.c
 create mode 100644 ctype/isblank.c
 create mode 100644 ctype/iscntrl.c
 create mode 100644 ctype/isdigit.c
 create mode 100644 ctype/isgraph.c
 create mode 100644 ctype/islower.c
 create mode 100644 ctype/isprint.c
 create mode 100644 ctype/ispunct.c
 create mode 100644 ctype/isspace.c
 create mode 100644 ctype/isupper.c
 create mode 100644 ctype/isxdigit.c
 create mode 100644 ctype/toascii.c
 create mode 100644 ctype/tolower.c
 create mode 100644 ctype/toupper.c

diff --git a/ctype/isalnum.c b/ctype/isalnum.c
new file mode 100644
index 0000000..f4a0abd
--- /dev/null
+++ b/ctype/isalnum.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int isalnum(int c) {
+  return (isalpha(c) || isdigit(c));
+}
\ No newline at end of file
diff --git a/ctype/isalpha.c b/ctype/isalpha.c
new file mode 100644
index 0000000..605ffe2
--- /dev/null
+++ b/ctype/isalpha.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int isalpha(int c) {
+  return (isupper(c) || islower(c));
+}
\ No newline at end of file
diff --git a/ctype/isascii.c b/ctype/isascii.c
new file mode 100644
index 0000000..6694249
--- /dev/null
+++ b/ctype/isascii.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int isascii(int c) {
+  return (c >= 0 && c <= 0177);
+}
\ No newline at end of file
diff --git a/ctype/isblank.c b/ctype/isblank.c
new file mode 100644
index 0000000..0f632db
--- /dev/null
+++ b/ctype/isblank.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int isblank(int c) {
+  return (c == ' ' || c == '\t');
+}
\ No newline at end of file
diff --git a/ctype/iscntrl.c b/ctype/iscntrl.c
new file mode 100644
index 0000000..e91271e
--- /dev/null
+++ b/ctype/iscntrl.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int iscntrl(int c) {
+  return ((c >= 0 && c < 32) || c == 127);
+}
\ No newline at end of file
diff --git a/ctype/isdigit.c b/ctype/isdigit.c
new file mode 100644
index 0000000..851e2cd
--- /dev/null
+++ b/ctype/isdigit.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int isdigit(int c) {
+  return (c <= '9' && c >= '0');
+}
\ No newline at end of file
diff --git a/ctype/isgraph.c b/ctype/isgraph.c
new file mode 100644
index 0000000..a04024f
--- /dev/null
+++ b/ctype/isgraph.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int isgraph(int c) {
+  return (isalnum(c) || ispunct(c));
+}
\ No newline at end of file
diff --git a/ctype/islower.c b/ctype/islower.c
new file mode 100644
index 0000000..6b98cb1
--- /dev/null
+++ b/ctype/islower.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int islower(int c) {
+  return (c >= 'a' && c <= 'z');
+}
\ No newline at end of file
diff --git a/ctype/isprint.c b/ctype/isprint.c
new file mode 100644
index 0000000..be61c39
--- /dev/null
+++ b/ctype/isprint.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int isprint(int c) {
+  return (isgraph(c) || c == ' ');
+}
\ No newline at end of file
diff --git a/ctype/ispunct.c b/ctype/ispunct.c
new file mode 100644
index 0000000..3417907
--- /dev/null
+++ b/ctype/ispunct.c
@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+int ispunct(int c) {
+  return (c < 128 && !(isalnum(c) || iscntrl(c)));
+}
\ No newline at end of file
diff --git a/ctype/isspace.c b/ctype/isspace.c
new file mode 100644
index 0000000..621caef
--- /dev/null
+++ b/ctype/isspace.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+int isspace(int c) {
+  switch(c) {
+    case ' ':
+    case '\f':
+    case '\n':
+    case '\r':
+    case '\t':
+    case '\v': return 1;
+    default: return 0;
+  }
+}
\ No newline at end of file
diff --git a/ctype/isupper.c b/ctype/isupper.c
new file mode 100644
index 0000000..399a6cf
--- /dev/null
+++ b/ctype/isupper.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int isupper(int c) {
+  return (c >= 'A' && c <= 'Z');
+}
\ No newline at end of file
diff --git a/ctype/isxdigit.c b/ctype/isxdigit.c
new file mode 100644
index 0000000..adc4fbf
--- /dev/null
+++ b/ctype/isxdigit.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int isxdigit(int c) {
+  return (isdigit(c) || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f'));
+}
\ No newline at end of file
diff --git a/ctype/toascii.c b/ctype/toascii.c
new file mode 100644
index 0000000..6bf7b40
--- /dev/null
+++ b/ctype/toascii.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int toascii(int c) {
+  return (c & 0x7f)
+}
\ No newline at end of file
diff --git a/ctype/tolower.c b/ctype/tolower.c
new file mode 100644
index 0000000..c26f03b
--- /dev/null
+++ b/ctype/tolower.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int tolower(int c) {
+  return (c + 32);
+}
\ No newline at end of file
diff --git a/ctype/toupper.c b/ctype/toupper.c
new file mode 100644
index 0000000..b704294
--- /dev/null
+++ b/ctype/toupper.c
@@ -0,0 +1,5 @@
+#include <ctype.h>
+
+int tolower(int c) {
+  return (c - 32);
+}
\ No newline at end of file