ngspice又一个电子CAD仿真软件代码.功能更全

				/**********				Copyright 1990 Regents of the University of California.  All rights reserved.				Author: 1989 Jaijeet S. Roychowdhury				**********/								#include "ngspice.h"				#include "distodef.h"				#include "suffix.h"								/*				 * PowDeriv computes the partial derivatives of the x^^m				 * function where the argument to the function is itself a				 * function of three variables p, q, and r. m is a constant.				 */								void 				PowDeriv(Dderivs *new, Dderivs *old, double emm)				{				    Dderivs temp;								    EqualDeriv(&temp, old);								    new->value = pow(temp.value, emm);				    new->d1_p = emm * new->value / temp.value * temp.d1_p;				    new->d1_q = emm * new->value / temp.value * temp.d1_q;				    new->d1_r = emm * new->value / temp.value * temp.d1_r;				    new->d2_p2 = emm * new->value / temp.value *					((emm-1) / temp.value * temp.d1_p * temp.d1_p + temp.d2_p2);				    new->d2_q2 = emm * new->value / temp.value *					((emm-1) / temp.value * temp.d1_q * temp.d1_q + temp.d2_q2);				    new->d2_r2 = emm * new->value / temp.value *					((emm-1) / temp.value * temp.d1_r * temp.d1_r + temp.d2_r2);				    new->d2_pq = emm * new->value / temp.value *					((emm-1) / temp.value * temp.d1_p * temp.d1_q + temp.d2_pq);				    new->d2_qr = emm * new->value / temp.value *					((emm-1) / temp.value * temp.d1_q * temp.d1_r + temp.d2_qr);				    new->d2_pr = emm * new->value / temp.value *					((emm-1) / temp.value * temp.d1_p * temp.d1_r + temp.d2_pr);				    new->d3_p3 = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_p * 					 temp.d1_p * temp.d1_p + temp.d1_p * temp.d2_p2 + temp.d1_p *					 temp.d2_p2 + temp.d1_p * temp.d2_p2) + emm * new->value /					temp.value * temp.d3_p3;				    new->d3_q3 = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_q * 					 temp.d1_q * temp.d1_q + temp.d1_q * temp.d2_q2 + temp.d1_q *					 temp.d2_q2 + temp.d1_q * temp.d2_q2) + emm * new->value /					temp.value * temp.d3_q3;				    new->d3_r3 = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_r *temp.d1_r * temp.d1_r +					 temp.d1_r * temp.d2_r2 + temp.d1_r * temp.d2_r2 + temp.d1_r *					 temp.d2_r2) + emm * new->value / temp.value * temp.d3_r3;				    new->d3_p2r = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_p * temp.d1_p * temp.d1_r +					 temp.d1_p * temp.d2_pr + temp.d1_p * temp.d2_pr + temp.d1_r *					 temp.d2_p2) + emm * new->value / temp.value * temp.d3_p2r;				    new->d3_p2q = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_p * temp.d1_p * temp.d1_q +					 temp.d1_p * temp.d2_pq + temp.d1_p * temp.d2_pq + temp.d1_q *					 temp.d2_p2) + emm * new->value / temp.value * temp.d3_p2q;				    new->d3_q2r = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_q * temp.d1_q * temp.d1_r +					 temp.d1_q * temp.d2_qr + temp.d1_q * temp.d2_qr + temp.d1_r *					 temp.d2_q2) + emm * new->value / temp.value * temp.d3_q2r;				    new->d3_pq2 = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_q * temp.d1_q * temp.d1_p +					 temp.d1_q * temp.d2_pq + temp.d1_q * temp.d2_pq + temp.d1_p *					 temp.d2_q2) + emm * new->value / temp.value * temp.d3_pq2;				    new->d3_pr2 = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_r * temp.d1_r * temp.d1_p +					 temp.d1_r * temp.d2_pr + temp.d1_r * temp.d2_pr + temp.d1_p *					 temp.d2_r2) + emm * new->value / temp.value * temp.d3_pr2;				    new->d3_qr2 = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_r * temp.d1_r * temp.d1_q +					 temp.d1_r * temp.d2_qr + temp.d1_r * temp.d2_qr + temp.d1_q *					 temp.d2_r2) + emm * new->value / temp.value * temp.d3_qr2;				    new->d3_pqr = emm * (emm-1) * new->value / (temp.value * temp.value) *					((emm-2) / temp.value * temp.d1_p * temp.d1_q * temp.d1_r +					 temp.d1_p * temp.d2_qr + temp.d1_q * temp.d2_pr + temp.d1_r *					 temp.d2_pq) + emm * new->value / temp.value * temp.d3_pqr;				}