29.04.2014 - Version 0.4.0_prealpha. PICodeParser, namespace PICodeInfo, new tool "pip_cmg" in dir "code_model_generator". New feature in PIIODevice - "createFromFullPath", all parameters of all I/O devices now works with PIObjects`s properties.

pievaluator.cpp

@@ -1,7 +1,7 @@
 /*
     PIP - Platform Independent Primitives
     Evaluator designed for stream computing
-    Copyright (C) 2013  Ivan Pelipenko peri4ko@gmail.com
+    Copyright (C) 2014  Ivan Pelipenko peri4ko@gmail.com
 
     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
@@ -158,6 +158,7 @@ PIEvaluatorContent::PIEvaluatorContent() {
 	addFunction("clamp", 3); // (x,a,b) =  x < a ? a : (x > b ? b : x)
 	addFunction("step", 2); // (x,s) =     x >= s ? 1. : 0.  (1 if 'x' >= 's', else 0)
 	addFunction("mix", 3); // (x,a,b) =    a*(1.-x) + b*x    (interpolate between 'a' and 'b' linear for 'x')
+	addFunction("defined", 1);
 	clearCustomVariables();
 	//addVariable("n", 0.);
 	//addVariable("x1", 123);
@@ -245,6 +246,7 @@ PIEvaluatorTypes::BaseFunctions PIEvaluatorContent::getBaseFunction(const PIStri
 	if (name == "clamp") return PIEvaluatorTypes::bfClamp;
 	if (name == "step") return PIEvaluatorTypes::bfStep;
 	if (name == "mix") return PIEvaluatorTypes::bfMix;
+	if (name == "defined") return PIEvaluatorTypes::bfDefined;
 	return PIEvaluatorTypes::bfUnknown;
 }
 
@@ -1148,6 +1150,9 @@ inline void PIEvaluator::execFunction(const PIEvaluatorTypes::Instruction & ci)
 		ttmp = value(ci.operators[2]);
 		tmpvars[oi].value = stmp.real() * (1. - tmp.real()) + ttmp.real() * tmp.real();
 		break;
+	case PIEvaluatorTypes::bfDefined:
+		tmpvars[oi].value = value(ci.operators[0]).real() > 0. ? complexd_1 : complexd_0;
+		break;
 	case PIEvaluatorTypes::bfRandom:
 		tmp = static_cast<ldouble>(rand()) / RAND_MAX;
 		stmp = value(ci.operators[1]) - value(ci.operators[0]);