57     r->w = p->w + q->w;  in C_QUATAdd()
131     r->w = p->w - q->w;  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()
364     r->w = q->w * 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()
501         unit->w = src->w * 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()
623     inv->w =  src->w * norminv;  in C_QUATInverse()
780     ASSERTMSG( ( q->w == 0.0F ), QUAT_EXP_3 );  in C_QUATExp()
791     r->w = (f32)cosf(theta);  in C_QUATExp()
827     theta = atan2f( scale, q->w );  in C_QUATLogN()
835     r->w = 0.0F;  in C_QUATLogN()
859     dot =  q->x*qto->x + q->y*qto->y + q->z*qto->z + q->w*qto->w;  in C_QUATMakeClosest()
866         r->w = -q->w;  in C_QUATMakeClosest()
903     r->w = ch;  in C_QUATRotAxisRad()
931         r->w = s * 0.5f;  in C_QUATMtx()
950         r->w = (m[k][j] - m[j][k]) * s;  in C_QUATMtx()
982     r->w = t * ( q->w - p->w ) + p->w;  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()
1032     r->w = tp * p->w + tq * q->w;  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()
1136     wx = q->w * xs;     wy = q->w * ys;  wz = q->w * zs;  in C_MTXQuat()