From db7f1a2652203376a694d6dbc3cfed5969f8fdfa Mon Sep 17 00:00:00 2001
From: Nick Downing <downing.nick@gmail.com>
Date: Fri, 20 Jan 2017 11:58:11 +1100
Subject: [PATCH] Add modf() so that printf() works with floating point formats

---
 lib/libstdc/linux/gen/Makefile |  4 ++--
 lib/libstdc/linux/gen/modf.c   |  7 +++++++
 test/Makefile                  | 12 ++++++++++++
 test/hello.c                   |  2 +-
 test/n.sh                      |  5 -----
 5 files changed, 22 insertions(+), 8 deletions(-)
 create mode 100644 lib/libstdc/linux/gen/modf.c
 create mode 100644 test/Makefile
 delete mode 100755 test/n.sh

diff --git a/lib/libstdc/linux/gen/Makefile b/lib/libstdc/linux/gen/Makefile
index 080aab3..cc25be1 100644
--- a/lib/libstdc/linux/gen/Makefile
+++ b/lib/libstdc/linux/gen/Makefile
@@ -8,8 +8,8 @@ CC=gcc -g -I${ROOT}/cross/include -Dx_vax -Wall -Wno-char-subscripts -Wno-deprec
 #	@(#)Makefile	5.4 (Berkeley) 9/5/85
 #
 
-SRCS=	abort.c
-OBJS=	abort.o
+SRCS=	abort.c modf.c
+OBJS=	abort.o modf.o
 TAGSFILE=tags
 
 .c.o:
diff --git a/lib/libstdc/linux/gen/modf.c b/lib/libstdc/linux/gen/modf.c
new file mode 100644
index 0000000..564ab52
--- /dev/null
+++ b/lib/libstdc/linux/gen/modf.c
@@ -0,0 +1,7 @@
+#include <nox_math.h>
+
+#include <math.h>
+
+double modf(v, p) double v; double *p; {
+	return nox_modf(v, p);
+}
diff --git a/test/Makefile b/test/Makefile
new file mode 100644
index 0000000..1f8091a
--- /dev/null
+++ b/test/Makefile
@@ -0,0 +1,12 @@
+ROOT=..
+CC=gcc -g -I${ROOT}/cross/include -L${ROOT}/cross/lib -Dx_vax -Wall -Wno-char-subscripts -Wno-deprecated-declarations -Wno-format -Wno-maybe-uninitialized -Wno-parentheses -Wno-unused-result
+
+.c.o:
+	${ROOT}/xify/xify.sh <$< >$*.temp.c
+	${CC} -o $@ -c $*.temp.c
+
+hello: hello.o
+	${CC} -o $@ ${ROOT}/cross/lib/crt0.o hello.o -lx_c
+
+clean:
+	rm -f hello *.temp.c *.o
diff --git a/test/hello.c b/test/hello.c
index 3b433f9..418cfea 100644
--- a/test/hello.c
+++ b/test/hello.c
@@ -1,6 +1,6 @@
 #include <stdio.h>
 
 int main() {
-	printf("hello, world\n");
+	printf("hello, %s %.*s %5.2f\n", "world", 2, "fun", 3.14159);
 	return 0;
 }
diff --git a/test/n.sh b/test/n.sh
deleted file mode 100755
index dac9453..0000000
--- a/test/n.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/sh
-ROOT=..
-$ROOT/xify/xify.sh <hello.c >hello.temp.c
-gcc -g -I$ROOT/cross/include -Dx_vax -Wall -Wno-char-subscripts -Wno-deprecated-declarations -Wno-format -Wno-maybe-uninitialized -Wno-parentheses -Wno-unused-result -o hello.o -c hello.temp.c
-gcc -g -L$ROOT/cross/lib -o hello $ROOT/cross/lib/crt0.o hello.o -lx_c
-- 
2.34.1