diff options
Diffstat (limited to 'umath/vec.c')
| -rw-r--r-- | umath/vec.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/umath/vec.c b/umath/vec.c new file mode 100644 index 0000000..fe82f58 --- /dev/null +++ b/umath/vec.c @@ -0,0 +1,42 @@ +#include <vec.h> + +float vec2_add (float c[], float a[], float b[]) { + c[0]=a[0]+b[0]; c[1]=a[1]+b[1]; +} +float vec2_sub (float c[], float a[], float b[]) { + c[0]=a[0]-b[0]; c[1]=a[1]-b[1]; +} +float vec2_mul (float c[], float a[], float b) { + c[0]=a[0]*b; c[1]=a[1]*b; +} +float vec2_div (float c[], float a[], float b) { + c[0]=a[0]/b; c[1]=a[1]/b; +} + +float vec2_mag (float v[]) { return sqrt(v[0]*v[0]+v[1]*v[1]); } +float vec2_mag2 (float v[]) { return v[0]*v[0]+v[1]*v[1]; } + +void vec2_norm (float v[]) { + float m=vec2_mag(v); v[0]/=m; v[1]/=m; +} + + +float vec3_add (float c[], float a[], float b[]) { + c[0]=a[0]+b[0]; c[1]=a[1]+b[1]; c[2]=a[2]+b[2]; +} +float vec3_sub (float c[], float a[], float b[]) { + c[0]=a[0]-b[0]; c[1]=a[1]-b[1]; c[2]=a[2]-b[2]; +} +float vec3_mul (float c[], float a[], float b) { + c[0]=a[0]*b; c[1]=a[1]*b; c[2]=a[2]*b; +} +float vec3_div (float c[], float a[], float b) { + c[0]=a[0]/b; c[1]=a[1]/b; c[2]=a[2]/b; +} + +float vec3_mag (float v[]) { return sqrt(v[0]*v[0]+v[1]*v[1]+v[2]*v[2]); } +float vec3_mag2 (float v[]) { return v[0]*v[0]+v[1]*v[1]+v[2]*v[2]; } + +void vec3_norm (float v[]) { + float m=vec3_mag(v); v[0]/=m; v[1]/=m; v[2]/=m; +}
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