libpsx: Add rewind(3)

2 files changed, 7 insertions, 0 deletions

diff --git a/libpsx/include/stdio.h b/libpsx/include/stdio.h
index 89d8817..34d2d57 100644
--- a/libpsx/include/stdio.h
+++ b/libpsx/include/stdio.h
@@ -123,6 +123,7 @@ size_t fwrite(void *ptr, size_t size, size_t nmemb, FILE *stream);
 int fgetc(FILE *f);
 int ftell(FILE *f);
 int fseek(FILE *f, int offset, int whence);
+void rewind(FILE *f);
 
 int fputs(const char *str, FILE *stream);
 void clearerr(FILE *stream);
diff --git a/libpsx/src/libc.c b/libpsx/src/libc.c
index 3baccf4..58884b0 100644
--- a/libpsx/src/libc.c
+++ b/libpsx/src/libc.c
@@ -420,6 +420,12 @@ int fseek(FILE *f, int offset, int whence)
 	return 0;
 }
 
+void rewind(FILE *f)
+{
+	fseek(f, 0, SEEK_SET);
+	clearerr(f);
+}
+
 int toupper(int c)
 {
 	if(c >= 'a' && c <= 'z')