[Kst] branches/work/kst/portto4/kst/src/libkstmath

[Barth Netterfield]

SVN commit 1247738 by netterfield:

Step function was not implemented (!)  Now it is.


 M  +9 -0      enodes.cpp  


--- branches/work/kst/portto4/kst/src/libkstmath/enodes.cpp #1247737:1247738
@@ -378,7 +378,15 @@
   return 1.0/cos(x);
 }
 
+static double step(double x) {
+  if (x>0.0) {
+    return 1.0;
+  } else {
+    return 0.0;
+  }
+}
 
+
 static struct {
   const char *name;
   double (*func)(double);
@@ -401,6 +409,7 @@
   {"sin",  &sin},
   {"sinh", &sinh},
   {"sqrt", &sqrt},
+  {"step", &step},
   {"tan",  &tan},
   {"tanh", &tanh},
   {0, 0}