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Changed according to code supplied by Hitoshi Tanaka.

This commit is contained in:
pnenzi 2005-08-23 18:29:53 +00:00
parent ef5fab62a5
commit f3e144bc8d
1 changed files with 46 additions and 16 deletions
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62
src/xspice/icm/analog/s_xfer/cfunc.mod
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@ -215,7 +215,7 @@ void cm_s_xfer(ARGS) /* structure holding parms, inputs, outputs, etc. */
denonminator coefficients */
double **num_coefficient; /* dynamic array that holds the numerator
coefficients */
/*double **old_num_coefficient;?* dynamic array that holds the old numerator
double **old_num_coefficient;/* dynamic array that holds the old numerator
coefficients */
double factor; /* gain factor in case the highest
denominator coefficient is not 1 */
@ -292,22 +292,23 @@ void cm_s_xfer(ARGS) /* structure holding parms, inputs, outputs, etc. */
/* Allocate storage for coefficient values */
den_coefficient = (double **) calloc(den_size,sizeof(double));
den_coefficient = (double **) calloc(den_size,sizeof(double *));
old_den_coefficient = (double **) calloc(den_size,sizeof(double *));
num_coefficient = (double **) calloc(num_size,sizeof(double *));
old_num_coefficient = (double **) calloc(num_size,sizeof(double *));
for(i=den_size;i<(2*den_size);i++){
den_coefficient[i-den_size] = cm_analog_alloc(i,sizeof(double));
old_den_coefficient[i-den_size] = den_coefficient[i-den_size] =
cm_analog_alloc(i,sizeof(double));
}
num_coefficient = (double **) calloc(num_size,sizeof(double));
for(i=2*den_size;i<(2*den_size + num_size);i++){
num_coefficient[i-2*den_size] = cm_analog_alloc(i,sizeof(double));
old_num_coefficient[i-2*den_size] = num_coefficient[i-2*den_size] =
cm_analog_alloc(i,sizeof(double));
}
/* I don't really need to allocate old_den_coefficient. It's just that
I free it at the end of the model every time through */
old_den_coefficient = (double **) calloc(den_size,sizeof(double));
out = cm_analog_alloc(2*den_size+num_size,sizeof(double));
in = cm_analog_alloc(2*den_size+num_size+1,sizeof(double));
@ -320,6 +321,27 @@ void cm_s_xfer(ARGS) /* structure holding parms, inputs, outputs, etc. */
ITP_VAR(total_gain) = gain;
ITP_VAR_SIZE(total_gain) = 1.0; */
// Retrieve pointers
for (i=0; i<den_size; i++) {
integrator[i] = cm_analog_get_ptr(i,0);
old_integrator[i] = cm_analog_get_ptr(i,0);
}
out = cm_analog_get_ptr(2*den_size+num_size,0);
in = cm_analog_get_ptr(2*den_size+num_size+1,0);
for(i=den_size;i<2*den_size;i++){
den_coefficient[i-den_size] = cm_analog_get_ptr(i,0);
old_den_coefficient[i-den_size] = cm_analog_get_ptr(i,0);
}
for(i=2*den_size;i<2*den_size+num_size;i++){
num_coefficient[i-2*den_size] = cm_analog_get_ptr(i,0);
old_num_coefficient[i-2*den_size] = cm_analog_get_ptr(i,0);
}
gain = cm_analog_get_ptr(2*den_size+num_size+2,0);
}else { /* Allocation was not necessary...retrieve previous values */
/* Set pointers to storage locations for in, out, and integrators...*/
@ -349,9 +371,12 @@ void cm_s_xfer(ARGS) /* structure holding parms, inputs, outputs, etc. */
}
num_coefficient = (double **) calloc(num_size,sizeof(double));
old_num_coefficient = (double **) calloc(num_size,sizeof(double));
for(i=2*den_size;i<2*den_size+num_size;i++){
num_coefficient[i-2*den_size] = cm_analog_get_ptr(i,0);
old_num_coefficient[i-2*den_size] = cm_analog_get_ptr(i,1);
num_coefficient[i-2*den_size] = cm_analog_get_ptr(i,0);
*(num_coefficient[i-2*den_size]) = *(old_num_coefficient[i-2*den_size]);
}
/* gain has to be stored each time since it could possibly change
@ -379,7 +404,8 @@ void cm_s_xfer(ARGS) /* structure holding parms, inputs, outputs, etc. */
/* actual highest integrator...it */
/* is NOT a true state variable. */
if ( PARAM_NULL(int_ic) ) {
*(integrator[i]) = *(old_integrator[i]) = PARAM(int_ic[0]);
// *(integrator[i]) = *(old_integrator[i]) = PARAM(int_ic[0]);
*(integrator[i]) = *(old_integrator[i]) = 0;
}
else {
*(integrator[i]) = *(old_integrator[i]) =
@ -411,7 +437,8 @@ void cm_s_xfer(ARGS) /* structure holding parms, inputs, outputs, etc. */
/* Test denominator highest order coefficient...if that value */
/* is other than 1.0, then divide all denominator coefficients */
/* and the gain by that value... */
if ( (factor = PARAM(den_coeff[den_size-1])) != 1.0 ) {
// if ( (factor = PARAM(den_coeff[den_size-1])) != 1.0 ) {
if ( (factor = *den_coefficient[den_size-1]) != 1.0 ) {
for (i=0; i<den_size; i++) {
*(den_coefficient[i]) = *(den_coefficient[i]) / factor;
}
@ -520,6 +547,7 @@ void cm_s_xfer(ARGS) /* structure holding parms, inputs, outputs, etc. */
OUTPUT(out) = *out;
PARTIAL(out,in) = pout_pin;
// cm_analog_auto_partial(); // Removed again. Seems to have problems.
}
@ -593,10 +621,12 @@ void cm_s_xfer(ARGS) /* structure holding parms, inputs, outputs, etc. */
}
/* free all allocated memory */
free(integrator);
free(old_integrator);
free(den_coefficient);
free(old_den_coefficient);
if(integrator) free(integrator);
if(old_integrator) free(old_integrator);
if(den_coefficient) free(den_coefficient);
if(old_den_coefficient) free(old_den_coefficient);
if(num_coefficient) free(num_coefficient);
if(old_num_coefficient) free(old_num_coefficient);
}