cwVectOps.h : Added urand() and sum_sq().
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cwVectOps.h
23
cwVectOps.h
@ -72,7 +72,7 @@ namespace cw
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template< typename T >
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template< typename T >
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void zero( T* v, unsigned n )
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void zero( T* v, unsigned n )
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{ fill(v,n,0); }
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{ fill(v,n,(T)0); }
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template< typename T >
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template< typename T >
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void ones( T* v, unsigned n )
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void ones( T* v, unsigned n )
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@ -379,6 +379,17 @@ namespace cw
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return beg + (incr*i);
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return beg + (incr*i);
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}
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}
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template< typename T >
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T* urand( T* y, unsigned yN, const T& min_val, const T& max_val )
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{
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unsigned i = 0;
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for(; i<yN; ++i)
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y[i] = min_val + (T)((double)(std::rand() * (max_val-min_val)) / RAND_MAX);
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return y;
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}
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template< typename T >
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template< typename T >
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T sum( const T* v, unsigned n )
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T sum( const T* v, unsigned n )
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{
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{
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@ -419,6 +430,16 @@ namespace cw
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return sum;
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return sum;
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}
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}
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template< typename T0 >
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T0 sum_sq( const T0* v, unsigned n )
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{
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T0 sum = 0;
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for(unsigned i=0; i<n; ++i)
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sum += v[i] * v[i];
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return sum;
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}
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//==================================================================================================================
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//==================================================================================================================
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// Statistics
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// Statistics
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