89     r->z = p->z + q->z;  in C_QUATAdd()
145     r->z = p->z - q->z;  in C_QUATSubtract()
212     r->w = p->w*q->w - p->x*q->x - p->y*q->y - p->z*q->z;  in C_QUATMultiply()
213     r->x = p->w*q->x + p->x*q->w + p->y*q->z - p->z*q->y;  in C_QUATMultiply()
214     r->y = p->w*q->y + p->y*q->w + p->z*q->x - p->x*q->z;  in C_QUATMultiply()
215     r->z = p->w*q->z + p->z*q->w + p->x*q->y - p->y*q->x;  in C_QUATMultiply()
317     r->z = q->z * scale;  in C_QUATScale()
366     return (q->x*p->x + q->y*p->y + q->z*p->z + q->w*p->w);  in C_QUATDotProduct()
416     mag = (src->x * src->x) + (src->y * src->y) + (src->z * src->z) + (src->w * src->w);  in C_QUATNormalize()
424         unit->z = src->z * mag;  in C_QUATNormalize()
429         unit->x = unit->y = unit->z = unit->w = 0.0F;      in C_QUATNormalize()
507     mag = ( src->x*src->x + src->y*src->y + src->z*src->z + src->w*src->w );  in C_QUATInverse()
518     inv->z = -src->z * norminv;  in C_QUATInverse()
655     theta = sqrtf( q->x*q->x + q->y*q->y + q->z*q->z );  in C_QUATExp()
663     r->z = scale * q->z;  in C_QUATExp()
685     scale = q->x*q->x + q->y*q->y + q->z*q->z;  in C_QUATLogN()
691         mag = scale + q->z*q->z;  in C_QUATLogN()
707     r->z = scale*q->z;  in C_QUATLogN()
732     dot =  q->x*qto->x + q->y*qto->y + q->z*qto->z + q->w*qto->w;  in C_QUATMakeClosest()
738         r->z = -q->z;  in C_QUATMakeClosest()
775     r->z = sh * nAxis.z;  in C_QUATRotAxisRad()
808         r->z = (m[1][0] - m[0][1]) * s;  in C_QUATMtx()
829         r->z = q[2];  in C_QUATMtx()
854     r->z = t * ( q->z - p->z ) + p->z;  in C_QUATLerp()
879     cos_th = p->x * q->x + p->y * q->y + p->z * q->z + p->w * q->w;  in C_QUATSlerp()
904     r->z = tp * p->z + tq * q->z;  in C_QUATSlerp()