Alexandre Salconi-Denis / LSM303DLH

My attempt to made a more useful lib. You can get the accelerator and magnetometer.

Fork of LSM303DLH by Michael Shimniok

vector.cpp

Committer:
salco
Date:
2017-08-06
Revision:
8:cc338ded0b2c
Parent:
0:de767f4959ef

File content as of revision 8:cc338ded0b2c:

#include <vector.h>
#include <math.h>

void vector_cross(const vector *a,const vector *b, vector *out)
{
  out->x = a->y*b->z - a->z*b->y;
  out->y = a->z*b->x - a->x*b->z;
  out->z = a->x*b->y - a->y*b->x;
}

float vector_dot(const vector *a,const vector *b)
{
  return a->x*b->x+a->y*b->y+a->z*b->z;
}

void vector_normalize(vector *a)
{
  float mag = sqrt(vector_dot(a,a));
  a->x /= mag;
  a->y /= mag;
  a->z /= mag;
}