where.cpp		where.cpp
	/************************************************************************** ***		/************************************************************************** ***
	* where.cpp Blitz++ Vector<T> example, illustrating where(X,Y,Z)		* where.cpp Blitz++ 1D Array example, illustrating where(X,Y,Z)
	* expressions.		* expressions.
	************************************************************************** ***/		************************************************************************** ***/
	#include <blitz/vector-et.h>		#include <blitz/array.h>
	#include <blitz/vecwhere.h>
	BZ_USING_NAMESPACE(blitz)		BZ_USING_NAMESPACE(blitz)
	int main()		int main()
	{		{
	Vector<int> x = Range(-3,+3); // [ -3 -2 -1 0 1 2 3 ]		// Vector<int> x = Range(-3,+3); // [ -3 -2 -1 0 1 2 3 ]
			Array<int,1> x(Range(-3,+3));
			x = tensor::i;
	// The where(X,Y,Z) function is similar to the X ? Y : Z operator.		// The where(X,Y,Z) function is similar to the X ? Y : Z operator.
	// If X is logical true, then Y is returned; otherwise, Z is		// If X is logical true, then Y is returned; otherwise, Z is
	// returned.		// returned.
	Vector<int> y = where(abs(x) > 2, x+10, x-10);		// Vector<int> y = where(abs(x) > 2, x+10, x-10);
			Array<int,1> y(x.shape());
			y = where(abs(x) > 2, x+10, x-10);
	// The above statement is transformed into something resembling:		// The above statement is transformed into something resembling:
	//		//
	// for (unsigned i=0; i < 7; ++i)		// for (unsigned i=0; i < 7; ++i)
	// y[i] = (abs(x[i]) > 2) ? (x[i]+10) : (x[i]-10);		// y[i] = (abs(x[i]) > 2) ? (x[i]+10) : (x[i]-10);
	//		//
	// The first expression (abs(x) > 2) can involve the usual		// The first expression (abs(x) > 2) can involve the usual
	// comparison and logical operators: < > <= >= == != && ||		// comparison and logical operators: < > <= >= == != && ||
	cout << x << endl		cout << x << endl
End of changes. 4 change blocks.
	5 lines changed or deleted		8 lines changed or added
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