X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flibpspp%2Ffloat-format.c;h=36cc0af3c8c3119fe7a13e13e1f35e2141460dd8;hb=b779cc2fe07d6e8e66aad413e4644e8e124c65ff;hp=7d65375ada731657a8ea50c221d843f8dacdb21e;hpb=43b1296aafe7582e7dbe6c2b6a8b478d7d9b0fcf;p=pspp

diff --git a/src/libpspp/float-format.c b/src/libpspp/float-format.c
index 7d65375ada..36cc0af3c8 100644
--- a/src/libpspp/float-format.c
+++ b/src/libpspp/float-format.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2006 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2011 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -16,18 +16,17 @@
 
 #include <config.h>
 
-#include <libpspp/float-format.h>
+#include "libpspp/float-format.h"
 
+#include <byteswap.h>
 #include <ctype.h>
 #include <inttypes.h>
 #include <stdlib.h>
+#include <string.h>
 
-#include <libpspp/assertion.h>
-#include <libpspp/integer-format.h>
-#include <libpspp/str.h>
+#include "libpspp/assertion.h"
+#include "libpspp/integer-format.h"
 
-#include "error.h"
-#include <byteswap.h>
 
 /* Neutral intermediate representation for binary floating-point numbers. */
 struct fp
@@ -106,6 +105,16 @@ float_convert (enum float_format from, const void *src,
     }
 }
 
+/* Converts SRC from format FROM to a native double and returns
+   the double. */
+double
+float_get_double (enum float_format from, const void *src)
+{
+  double dst;
+  float_convert (from, src, FLOAT_NATIVE_DOUBLE, &dst);
+  return dst;
+}
+
 /* Returns the number of bytes in a number in the given
    FORMAT. */
 size_t
@@ -177,6 +186,24 @@ float_identify (double expected_value, const void *number, size_t length,
       }
   return match_cnt;
 }
+
+/* Returns the double value that is just greater than -DBL_MAX,
+   which in PSPP syntax files is called LOWEST and used as the
+   low end of numeric ranges that are supposed to be unbounded on
+   the low end, as in the missing value set created by,
+   e.g. MISSING VALUES X(LOWEST THRU 5).  (-DBL_MAX is used for
+   SYSMIS so it is not available for LOWEST.) */
+double
+float_get_lowest (void)
+{
+  struct fp fp;
+  double x;
+
+  fp.class = LOWEST;
+  fp.sign = POSITIVE;
+  assemble_number (FLOAT_NATIVE_DOUBLE, &fp, &x);
+  return x;
+}
 
 /* Returns CNT bits in X starting from the given bit OFS. */
 static inline uint64_t
@@ -667,7 +694,7 @@ assemble_number (enum float_format type, struct fp *fp, void *number)
       break;
 
     case FLOAT_Z_SHORT:
-      put_uint64 (native_to_be32 (assemble_z (fp, 7, 24)), number);
+      put_uint32 (native_to_be32 (assemble_z (fp, 7, 24)), number);
       break;
     case FLOAT_Z_LONG:
       put_uint64 (native_to_be64 (assemble_z (fp, 7, 56)), number);