Changeset c842903 in git for factory/templates/ftmpl_functions.h

Timestamp:

Mar 11, 1998, 11:47:02 AM (26 years ago)

Author:

Jens Schmidt <schmidt@…>

Branches:

(u'spielwiese', '8e0ad00ce244dfd0756200662572aef8402f13d5')

Children:

d636adca8e47219c329f1d05ef6a4b1712a88b48

Parents:

071a57d32bf2ee76f41d23ebb68750940ae505ea

Message:

	* templates/ftmpl_functions.h (tabs): new function


git-svn-id: file:///usr/local/Singular/svn/trunk@1207 2c84dea3-7e68-4137-9b89-c4e89433aadc

File:

• factory/templates/ftmpl_functions.h (modified) (1 diff)

factory/templates/ftmpl_functions.h

@@ -1 +1 @@
 /* emacs edit mode for this file is -*- C++ -*- */
-/* $Id: ftmpl_functions.h,v 1.3 1997-06-19 13:11:16 schmidt Exp $ */
+/* $Id: ftmpl_functions.h,v 1.4 1998-03-11 10:47:02 schmidt Exp $ */
 
 #ifndef INCL_FUNCTIONS_H
 #define INCL_FUNCTIONS_H
 
+//{{{ docu
+//
+// ftmpl_functions.h - some useful template functions.
+//
+// Sooner or later you need them: functions to calculate the
+// minimum or maximum of two values or the absolute value.  Here
+// they are.  All of them are inlined, hence there is no source
+// file corresponding to `ftmpl_functions.h'.
+//
+// The functions are for internal use only (i.e. to build the
+// library), hence they should not be included from `factory.h'.
+// However, we have to install `ftmpl_functions.h' with the other
+// templates since the functions have to be instantiated.
+//
+// Used by: cf_gcd.cc, cf_map.cc, fac_ezgcd.cc, sm_sparsemod.cc,
+//   ftmpl_inst.cc
+//
+//}}}
+
 #include <factoryconf.h>
 
-template<class T>
-inline T tmax( const T & a, const T & b )
+//{{{ template <class T> inline T tmax ( const T & a, const T & b )
+//{{{ docu
+//
+// tmax() - return the maximum of `a' and `b'.
+//
+// `T' should have an `operator >()'.
+//
+//}}}
+template <class T>
+inline T tmax ( const T & a, const T & b )
 {
-  return (a > b) ? a : b;
+    return (a > b) ? a : b;
 }
+//}}}
 
-template<class T>
-inline T tmin( const T & a, const T & b )
+//{{{ template <class T> inline T tmin ( const T & a, const T & b )
+//{{{ docu
+//
+// tmin() - return the minimum of `a' and `b'.
+//
+// `T' should have an `operator <()'.
+//
+//}}}
+template <class T>
+inline T tmin ( const T & a, const T & b )
 {
-  return (a < b) ? a : b;
+    return (a < b) ? a : b;
 }
+//}}}
+
+//{{{ template <class T> inline T tabs ( const T & a )
+//{{{ docu
+//
+// tabs() - return the absolute value of `a'.
+//
+// `T' should have an `operator >()', an `operator -()', and a
+// `T::T( int )' constructor.
+//
+//}}}
+template <class T>
+inline T tabs ( const T & a )
+{
+    return (a > T( 0 )) ? a : -a;
+}
+//}}}
 
 #endif /* ! INCL_FUNCTIONS_H */