work on docs

[pspp] / src / libpspp / misc.h

diff --git a/src/libpspp/misc.h b/src/libpspp/misc.h
index e33d588fd8c0db6ca722278eb3c77260a6081d82..1698297dc4cc51a2694f55d831c740d4eb601694 100644 (file)
--- a/src/libpspp/misc.h
+++ b/src/libpspp/misc.h
@@ -14,9 +14,10 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
-#if !math_misc_h
-#define math_misc_h 1
+#if !libpspp_misc_h
+#define libpspp_misc_h 1
 
+#include <stddef.h>
 #include <float.h>
 #include <math.h>
 
@@ -60,4 +61,42 @@ pow4 (double x)
   return y;
 }
 
-#endif /* math/misc.h */
+/* Set *DEST to the lower of *DEST and SRC */
+static inline void
+minimize (double *dest, double src)
+{
+  if (src < *dest)
+    *dest = src;
+}
+
+
+/* Set *DEST to the greater of *DEST and SRC */
+static inline void
+maximize (double *dest, double src)
+{
+  if (src > *dest)
+    *dest = src;
+}
+
+
+/* Set *DEST to the lower of *DEST and SRC */
+static inline void
+minimize_int (int *dest, int src)
+{
+  if (src < *dest)
+    *dest = src;
+}
+
+
+/* Set *DEST to the greater of *DEST and SRC */
+static inline void
+maximize_int (int *dest, int src)
+{
+  if (src > *dest)
+    *dest = src;
+}
+
+int c_dtoastr (char *buf, size_t bufsize, int flags, int width, double x);
+
+
+#endif /* libpspp/misc.h */