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Diffstat (limited to 'utils/mathvec.h')
-rw-r--r-- | utils/mathvec.h | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/utils/mathvec.h b/utils/mathvec.h deleted file mode 100644 index f8c60e5d..00000000 --- a/utils/mathvec.h +++ /dev/null @@ -1,87 +0,0 @@ -#ifndef _MATH_VECTOR_H_ -#define _MATH_VECTOR_H_ - -#include <vector> -#include <iostream> -#include <cassert> - -class Vec { - private: - std::vector<double> _v; - - public: - Vec(const size_t n = 0, const double val = 0) { _v.resize(n, val); } - Vec(const std::vector<double>& v) : _v(v) {} - const std::vector<double>& STLVec() const { return _v; } - std::vector<double>& STLVec() { return _v; } - size_t Size() const { return _v.size(); } - double& operator[](int i) { return _v[i]; } - const double& operator[](int i) const { return _v[i]; } - Vec& operator+=(const Vec& b) { - assert(b.Size() == _v.size()); - for (size_t i = 0; i < _v.size(); i++) { - _v[i] += b[i]; - } - return *this; - } - Vec& operator*=(const double c) { - for (size_t i = 0; i < _v.size(); i++) { - _v[i] *= c; - } - return *this; - } - void Project(const Vec& y) { - for (size_t i = 0; i < _v.size(); i++) { - // if (sign(_v[i]) != sign(y[i])) _v[i] = 0; - if (_v[i] * y[i] <= 0) _v[i] = 0; - } - } -}; - -inline double dot_product(const Vec& a, const Vec& b) { - double sum = 0; - for (size_t i = 0; i < a.Size(); i++) { - sum += a[i] * b[i]; - } - return sum; -} - -inline std::ostream& operator<<(std::ostream& s, const Vec& a) { - s << "("; - for (size_t i = 0; i < a.Size(); i++) { - if (i != 0) s << ", "; - s << a[i]; - } - s << ")"; - return s; -} - -inline const Vec operator+(const Vec& a, const Vec& b) { - Vec v(a.Size()); - assert(a.Size() == b.Size()); - for (size_t i = 0; i < a.Size(); i++) { - v[i] = a[i] + b[i]; - } - return v; -} - -inline const Vec operator-(const Vec& a, const Vec& b) { - Vec v(a.Size()); - assert(a.Size() == b.Size()); - for (size_t i = 0; i < a.Size(); i++) { - v[i] = a[i] - b[i]; - } - return v; -} - -inline const Vec operator*(const Vec& a, const double c) { - Vec v(a.Size()); - for (size_t i = 0; i < a.Size(); i++) { - v[i] = a[i] * c; - } - return v; -} - -inline const Vec operator*(const double c, const Vec& a) { return a * c; } - -#endif |