Release calc version 2.10.2t30

file.h

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 1996 David I. Bell
+ * Permission is granted to use, distribute, or modify this source,
+ * provided that this copyright notice remains intact.
+ *
+ * File I/O routines callable by users.
+ */
+
+#include "have_fpos.h"
+
+
+/*
+ * Definition of opened files.
+ */
+typedef struct {
+	FILEID id;		/* id to identify this file */
+	FILE *fp;		/* real file structure for I/O */
+	dev_t dev;		/* file device */
+	ino_t inode;		/* file inode */
+	char *name;		/* file name */
+	BOOL reading;		/* TRUE if opened for reading */
+	BOOL writing;		/* TRUE if opened for writing */
+	char action;		/* most recent use for 'r', 'w' or 0 */
+	char mode[3];		/* open mode */
+} FILEIO;
+
+
+/*
+ * fgetpos/fsetpos vs fseek/ftell interface
+ *
+ * f_seek_set(FILE *stream, FILEPOS *loc)
+ *	Seek loc bytes from the beginning of the open file, stream.
+ *
+ * f_tell(FILE *stream, FILEPOS *loc)
+ *	Set loc to bytes from the beinning of the open file, stream.
+ *
+ * We assume that if your system does not have fgetpos/fsetpos,
+ * then it will have a FILEPOS that is a scalar type (e.g., long).
+ * Some obscure systems without fgetpos/fsetpos may not have a simple
+ * scalar type.  In these cases the f_tell macro below will fail.
+ */
+#if defined(HAVE_FPOS)
+
+#define f_seek_set(stream, loc) fsetpos((FILE*)(stream), (FILEPOS*)(loc))
+#define f_tell(stream, loc) fgetpos((FILE*)(stream), (FILEPOS*)(loc))
+
+#else
+
+#define f_seek_set(stream, loc)  \
+	fseek((FILE*)(stream), *(FILEPOS*)(loc), SEEK_SET)
+#define f_tell(stream, loc) (*((FILEPOS*)(loc)) = ftell((FILE*)(stream)))
+
+#endif
+
+
+/*
+ * external functions
+ */
+extern int fgetposid(FILEID id, FILEPOS *ptr);
+extern int fsetposid(FILEID id, FILEPOS *ptr);