debian man page for s3d_vector_angle

S3D_VECTOR_ANGLE(3)						    s3d Manual						       S3D_VECTOR_ANGLE(3)

NAME
       s3d_vector_angle - calculate angle between two vectors

SYNOPSIS
       #include <s3d.h>

       float s3d_vector_angle(const float vector1[], const float vector2[]);

DESCRIPTION
       Calculates and returns the angle between vector1 and vector2. Please note that the resulting angle is between 0 and PI, therefore not
       covering the whole period! To convert in degrees just do result*180/M_PI. All vectors should have the format float[3]. More info on
       wikipedia. http://en.wikipedia.org/wiki/Vector_(spatial)

AUTHOR
       Simon Wunderlich
	   Author of s3d

s3d															       S3D_VECTOR_ANGLE(3)