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Some 2d cartesian vector functions 

Former-commit-id: f5de4b53cee352d5c1866dfc0a771f462b50af7a
This commit is contained in:
Marek Nečada 2018-05-14 18:00:38 +00:00
parent 41366c175d
commit 4bfd0ce717
1 changed files with 21 additions and 0 deletions
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21
qpms/vectors.h
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@ -8,6 +8,27 @@
//static inline double vectors_h_sq(double x) {return x*x;}
static inline cart2_t cart2_add(const cart2_t a, const cart2_t b) {
cart2_t res = {a.x+b.x, a.y+b.y};
return res;
}
static inline cart2_t cart2_substract(const cart2_t a, const cart2_t b) {
cart2_t res = {a.x-b.x, a.y-b.y};
return res;
}
static inline cart2_t cart2_scale(const double c, const cart2_t v) {
cart2_t res = {c * v.x, c * v.y};
return res;
}
static inline double cart2norm(const cart2_t v) {
return sqrt(v.x*v.x + v.y*v.y);
}
static inline double cart3norm(const cart3_t v) {
return sqrt(v.x*v.x + v.y*v.y + v.z*v.z);
}