56     r->z = p->z + q->z;  in C_QUATAdd()
130     r->z = p->z - q->z;  in C_QUATSubtract()
216     r->w = p->w*q->w - p->x*q->x - p->y*q->y - p->z*q->z;  in C_QUATMultiply()
217     r->x = p->w*q->x + p->x*q->w + p->y*q->z - p->z*q->y;  in C_QUATMultiply()
218     r->y = p->w*q->y + p->y*q->w + p->z*q->x - p->x*q->z;  in C_QUATMultiply()
219     r->z = p->w*q->z + p->z*q->w + p->x*q->y - p->y*q->x;  in C_QUATMultiply()
363     r->z = q->z * scale;  in C_QUATScale()
425     return (q->x*p->x + q->y*p->y + q->z*p->z + q->w*p->w);  in C_QUATDotProduct()
492     mag = (src->x * src->x) + (src->y * src->y) + (src->z * src->z) + (src->w * src->w);  in C_QUATNormalize()
500         unit->z = src->z * mag;  in C_QUATNormalize()
505         unit->x = unit->y = unit->z = unit->w = 0.0F;  in C_QUATNormalize()
611     mag = ( src->x*src->x + src->y*src->y + src->z*src->z + src->w*src->w );  in C_QUATInverse()
622     inv->z = -src->z * norminv;  in C_QUATInverse()
782     theta = sqrtf( q->x*q->x + q->y*q->y + q->z*q->z );  in C_QUATExp()
790     r->z = scale * q->z;  in C_QUATExp()
812     scale = q->x*q->x + q->y*q->y + q->z*q->z;  in C_QUATLogN()
818         mag = scale + q->z*q->z;  in C_QUATLogN()
834     r->z = scale*q->z;  in C_QUATLogN()
859     dot =  q->x*qto->x + q->y*qto->y + q->z*qto->z + q->w*qto->w;  in C_QUATMakeClosest()
865         r->z = -q->z;  in C_QUATMakeClosest()
902     r->z = sh * nAxis.z;  in C_QUATRotAxisRad()
935         r->z = (m[1][0] - m[0][1]) * s;  in C_QUATMtx()
956         r->z = q[2];  in C_QUATMtx()
981     r->z = t * ( q->z - p->z ) + p->z;  in C_QUATLerp()
1006     cos_th = p->x * q->x + p->y * q->y + p->z * q->z + p->w * q->w;  in C_QUATSlerp()
1031     r->z = tp * p->z + tq * q->z;  in C_QUATSlerp()
1131     ASSERTMSG( ( q->x || q->y || q->z || q->w ), MTX_QUAT_3     );  in C_MTXQuat()
1133     s = 2.0f / ( (q->x * q->x) + (q->y * q->y) + (q->z * q->z) + (q->w * q->w) );  in C_MTXQuat()
1135     xs = q->x *  s;     ys = q->y *  s;  zs = q->z *  s;  in C_MTXQuat()
1138     yy = q->y * ys;     yz = q->y * zs;  zz = q->z * zs;  in C_MTXQuat()