From b23d7a293010c9c31845bbc308bcf0df9bb25984 Mon Sep 17 00:00:00 2001
From: "K. Lange" <klange@toaruos.org>
Date: Wed, 9 May 2018 17:02:31 +0900
Subject: [PATCH] some stuff to get further in python builds

---
 base/usr/include/ctype.h | 3 +++
 base/usr/include/math.h  | 2 ++
 base/usr/include/stdio.h | 3 +++
 libc/ctype/tolower.c     | 6 ++++++
 libc/ctype/toupper.c     | 7 +++++++
 libc/stdio/stdio.c       | 4 ++++
 6 files changed, 25 insertions(+)
 create mode 100644 libc/ctype/tolower.c
 create mode 100644 libc/ctype/toupper.c

diff --git a/base/usr/include/ctype.h b/base/usr/include/ctype.h
index e650fd3d..4604c86c 100644
--- a/base/usr/include/ctype.h
+++ b/base/usr/include/ctype.h
@@ -13,3 +13,6 @@ extern int isupper(int c);
 extern int isxdigit(int c);
 
 extern int isascii(int c);
+
+extern int tolower(int c);
+extern int toupper(int c);
diff --git a/base/usr/include/math.h b/base/usr/include/math.h
index 4d0b89f5..5b31ff99 100644
--- a/base/usr/include/math.h
+++ b/base/usr/include/math.h
@@ -9,3 +9,5 @@ extern double sqrt(double x);
 extern double fabs(double x);
 extern double sin(double x);
 extern double cos(double x);
+
+#define HUGE_VAL (__builtin_huge_val())
diff --git a/base/usr/include/stdio.h b/base/usr/include/stdio.h
index c421d7bc..e4675ce0 100644
--- a/base/usr/include/stdio.h
+++ b/base/usr/include/stdio.h
@@ -48,3 +48,6 @@ extern void perror(const char *s);
 extern int ungetc(int c, FILE * stream);
 
 extern int feof(FILE * stream);
+extern void clearerr(FILE * stream);
+
+#define getc(s) fgetc(s)
diff --git a/libc/ctype/tolower.c b/libc/ctype/tolower.c
new file mode 100644
index 00000000..576516ac
--- /dev/null
+++ b/libc/ctype/tolower.c
@@ -0,0 +1,6 @@
+int tolower(int c) {
+	if (c >= 'A' && c <= 'Z') {
+		return c - 'A' + 'a';
+	}
+	return c;
+}
diff --git a/libc/ctype/toupper.c b/libc/ctype/toupper.c
new file mode 100644
index 00000000..8af6fc39
--- /dev/null
+++ b/libc/ctype/toupper.c
@@ -0,0 +1,7 @@
+int toupper(int c) {
+	if (c >= 'a' && c <= 'z') {
+		return c - 'a' + 'A';
+	}
+	return c;
+}
+
diff --git a/libc/stdio/stdio.c b/libc/stdio/stdio.c
index ec65df96..f9fec650 100644
--- a/libc/stdio/stdio.c
+++ b/libc/stdio/stdio.c
@@ -331,3 +331,7 @@ void setbuf(FILE * stream, char * buf) {
 int feof(FILE * stream) {
 	return stream->eof;
 }
+
+void clearerr(FILE * stream) {
+	stream->eof = 0;
+}