86     r->x = p->x + q->x;  in C_QUATAdd()
142     r->x = p->x - q->x;  in C_QUATSubtract()
211     r->w = p->w*q->w - p->x*q->x - p->y*q->y - p->z*q->z;  in C_QUATMultiply()
212     r->x = p->w*q->x + p->x*q->w + p->y*q->z - p->z*q->y;  in C_QUATMultiply()
213     r->y = p->w*q->y + p->y*q->w + p->z*q->x - p->x*q->z;  in C_QUATMultiply()
214     r->z = p->w*q->z + p->z*q->w + p->x*q->y - p->y*q->x;  in C_QUATMultiply()
314     r->x = q->x * scale;  in C_QUATScale()
365     return (q->x*p->x + q->y*p->y + q->z*p->z + q->w*p->w);  in C_QUATDotProduct()
415     mag = (src->x * src->x) + (src->y * src->y) + (src->z * src->z) + (src->w * src->w);  in C_QUATNormalize()
421         unit->x = src->x * mag;  in C_QUATNormalize()
428         unit->x = unit->y = unit->z = unit->w = 0.0F;      in C_QUATNormalize()
506     mag = ( src->x*src->x + src->y*src->y + src->z*src->z + src->w*src->w );  in C_QUATInverse()
515     inv->x = -src->x * norminv;  in C_QUATInverse()
654     theta = sqrtf( q->x*q->x + q->y*q->y + q->z*q->z );  in C_QUATExp()
660     r->x = scale * q->x;  in C_QUATExp()
684     scale = q->x*q->x + q->y*q->y + q->z*q->z;  in C_QUATLogN()
704     r->x = scale*q->x;  in C_QUATLogN()
731     dot =  q->x*qto->x + q->y*qto->y + q->z*qto->z + q->w*qto->w;  in C_QUATMakeClosest()
735         r->x = -q->x;  in C_QUATMakeClosest()
772     r->x = sh * nAxis.x;  in C_QUATRotAxisRad()
805         r->x = (m[2][1] - m[1][2]) * s;  in C_QUATMtx()
826         r->x = q[0];  in C_QUATMtx()
851     r->x = t * ( q->x - p->x ) + p->x;  in C_QUATLerp()
878     cos_th = p->x * q->x + p->y * q->y + p->z * q->z + p->w * q->w;  in C_QUATSlerp()
901     r->x = tp * p->x + tq * q->x;  in C_QUATSlerp()