64 lines
817 B
C++
64 lines
817 B
C++
#ifndef __COSMOTOOL_ALGO_HPP
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#define __COSMOTOOL_ALGO_HPP
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#include "config.hpp"
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namespace CosmoTool
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{
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template<typename T>
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T cube(T a)
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{
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return a*a*a;
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}
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template<typename T>
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T square(T a)
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{
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return a*a;
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}
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template<int N>
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class SPowerBase
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{
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public:
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template<typename T>
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static T spower(T a)
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{
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if (N<0)
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{
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return 1/SPowerBase<-N>::spower(a);
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}
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if ((N%2)==0)
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{
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T b = SPowerBase<N/2>::spower(a);
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return b*b;
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}
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T b = SPowerBase<(N-1)/2>::spower(a);
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return a*b*b;
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}
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};
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template<>
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class SPowerBase<0>
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{
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public:
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template<typename T>
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static T spower(T a)
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{
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return T(1);
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}
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};
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template<int N, typename T>
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T spower(T a)
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{
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return SPowerBase<N>::spower(a);
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}
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};
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#endif
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