Add isnanf module.

[pspp] / lib / freadahead.c

diff --git a/lib/freadahead.c b/lib/freadahead.c
index 3b4ac26cb05c4c49faa77dc6b1c54196dc014aab..15cc70894463e384880e235718dc10a887605e65 100644 (file)
--- a/lib/freadahead.c
+++ b/lib/freadahead.c
@@ -19,6 +19,8 @@
 /* Specification.  */
 #include "freadahead.h"
 
+#include "stdio-impl.h"
+
 size_t
 freadahead (FILE *fp)
 {
@@ -28,21 +30,15 @@ freadahead (FILE *fp)
   return (fp->_IO_read_end - fp->_IO_read_ptr)
         + (fp->_flags & _IO_IN_BACKUP ? fp->_IO_save_end - fp->_IO_save_base :
            0);
-#elif defined __sferror             /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
-# if defined __NetBSD__ || defined __OpenBSD__
-  struct __sfileext
-    {
-      struct  __sbuf _ub; /* ungetc buffer */
-      /* More fields, not relevant here.  */
-    };
-#  define HASUB(fp) (((struct __sfileext *) (fp)->_ext._base)->_ub._base != NULL)
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+  if ((fp_->_flags & __SWR) != 0 || fp_->_r < 0)
+    return 0;
+# if defined __DragonFly__
+  return __sreadahead (fp);
 # else
-#  define HASUB(fp) ((fp)->_ub._base != NULL)
+  return fp_->_r
+        + (HASUB (fp) ? fp_->_ur : 0);
 # endif
-  if ((fp->_flags & __SWR) != 0 || fp->_r < 0)
-    return 0;
-  return fp->_r
-        + (HASUB (fp) ? fp->_ur : 0);
 #elif defined __EMX__               /* emx+gcc */
   if ((fp->_flags & _IOWRT) != 0)
     return 0;
@@ -52,26 +48,9 @@ freadahead (FILE *fp)
      (fp->_ungetc_count == 0 ? fp->_rcount : fp->_ungetc_count - fp->_rcount) */
   return (fp->_rcount > 0 ? fp->_rcount : fp->_ungetc_count - fp->_rcount);
 #elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
-# if defined __sun && defined _LP64 /* Solaris/{SPARC,AMD64} 64-bit */
-#  define fp_ ((struct { unsigned char *_ptr; \
-                        unsigned char *_base; \
-                        unsigned char *_end; \
-                        long _cnt; \
-                        int _file; \
-                        unsigned int _flag; \
-                      } *) fp)
   if ((fp_->_flag & _IOWRT) != 0)
     return 0;
   return fp_->_cnt;
-# else
-#  if defined _SCO_DS               /* OpenServer */
-#   define _flag __flag
-#   define _cnt __cnt
-#  endif
-  if ((fp->_flag & _IOWRT) != 0)
-    return 0;
-  return fp->_cnt;
-# endif
 #elif defined __UCLIBC__            /* uClibc */
 # ifdef __STDIO_BUFFERS
   if (fp->__modeflags & __FLAG_WRITING)