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authorWu, Ke <wuke@cs.umd.edu>2014-12-17 16:00:04 -0500
committerWu, Ke <wuke@cs.umd.edu>2014-12-17 16:00:04 -0500
commitb6dd5a683db9dda2d634dd2fdb76606819594901 (patch)
tree6d81454a2491b444a190262e62dae960ef13ebaa /utils/mathvec.h
parent62249e8de1be27057649aa787b715af5727f8a7c (diff)
Combine everything related to maxent to a single file
Diffstat (limited to 'utils/mathvec.h')
-rw-r--r--utils/mathvec.h87
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