XSPICE triangle: indentations
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@ -8,17 +8,17 @@ Georgia Tech Research Corporation, Atlanta, Ga. 30332
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All Rights Reserved
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PROJECT A-8503-405
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AUTHORS
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AUTHORS
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12 Apr 1991 Harry Li
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MODIFICATIONS
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MODIFICATIONS
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2 Oct 1991 Jeffrey P. Murray
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SUMMARY
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@ -27,12 +27,12 @@ SUMMARY
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oscillator) code model.
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INTERFACES
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INTERFACES
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FILE ROUTINE CALLED
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FILE ROUTINE CALLED
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CMmacros.h cm_message_send();
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CMmacros.h cm_message_send();
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CM.c void *cm_analog_alloc()
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void *cm_analog_get_ptr()
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int cm_analog_set_temp_bkpt()
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@ -41,7 +41,7 @@ INTERFACES
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REFERENCED FILES
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Inputs from and outputs to ARGS structure.
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NON-STANDARD FEATURES
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@ -51,9 +51,9 @@ NON-STANDARD FEATURES
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/*=== INCLUDE FILES ====================*/
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#include "triangle.h"
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#include "triangle.h"
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/*=== CONSTANTS ========================*/
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@ -64,27 +64,27 @@ NON-STANDARD FEATURES
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/*=== LOCAL VARIABLES & TYPEDEFS =======*/
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/*=== LOCAL VARIABLES & TYPEDEFS =======*/
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/*=== FUNCTION PROTOTYPE DEFINITIONS ===*/
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/*==============================================================================
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FUNCTION void cm_triangle()
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AUTHORS
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AUTHORS
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12 Apr 1991 Harry Li
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MODIFICATIONS
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MODIFICATIONS
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2 Oct 1991 Jeffrey P. Murray
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@ -93,23 +93,23 @@ SUMMARY
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This function implements the triangle (controlled trianglewave
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oscillator) code model.
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INTERFACES
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INTERFACES
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FILE ROUTINE CALLED
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FILE ROUTINE CALLED
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CMmacros.h cm_message_send();
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CMmacros.h cm_message_send();
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CM.c void *cm_analog_alloc()
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void *cm_analog_get_ptr()
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int cm_analog_set_temp_bkpt()
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RETURNED VALUE
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Returns inputs and outputs via ARGS structure.
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GLOBAL VARIABLES
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NONE
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NON-STANDARD FEATURES
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@ -130,7 +130,7 @@ NON-STANDARD FEATURES
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* I / \ *
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* I / \ *
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* I / \ *
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* I / \ *
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* I / \ *
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* I / \ *
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* I / \ *
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* I/------------------------------------------ *
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@ -145,221 +145,219 @@ NON-STANDARD FEATURES
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* *
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*****************************************************/
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void cm_triangle(ARGS) /* structure holding parms,
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void cm_triangle(ARGS) /* structure holding parms,
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inputs, outputs, etc. */
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{
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int i; /* generic loop counter index */
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int cntl_size; /* size of the control array */
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int freq_size; /* size of the frequency array */
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int int_cycle; /* the number of cycles rounded to the nearest int */
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int freq_size; /* size of the frequency array */
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int int_cycle; /* the number of cycles rounded to the nearest int */
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double *x; /* pointer holds the values of the control array */
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double *y; /* pointer holds the values of the freq array */
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double cntl_input; /* control input */
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/*double out;*/ /* output */
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double dout_din; /* partial out wrt to control input */
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double output_low; /* lowest point of the wave */
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double output_hi; /* highest point of the wave */
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double dphase; /* percent into the current phase of the cycle */
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double *phase; /* instantaneous phase value */
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double *phase1; /* pointer to the previous phase value */
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double freq=0.0; /* actual frequency of the wave */
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double d_cycle; /* duty cycle */
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double *t1; /* pointer which stores time1 */
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double *t2; /* pointer which stores time2 */
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double *t_end; /* pointer which stores t_start */
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double time1; /* time of high peak */
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double time2; /* time of low peak */
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double t_start; /* time of the beginning of each cycle */
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double *y; /* pointer holds the values of the freq array */
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double cntl_input; /* control input */
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/*double out;*/ /* output */
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double dout_din; /* partial out wrt to control input */
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double output_low; /* lowest point of the wave */
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double output_hi; /* highest point of the wave */
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double dphase; /* percent into the current phase of the cycle */
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double *phase; /* instantaneous phase value */
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double *phase1; /* pointer to the previous phase value */
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double freq=0.0; /* actual frequency of the wave */
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double d_cycle; /* duty cycle */
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double *t1; /* pointer which stores time1 */
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double *t2; /* pointer which stores time2 */
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double *t_end; /* pointer which stores t_start */
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double time1; /* time of high peak */
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double time2; /* time of low peak */
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double t_start; /* time of the beginning of each cycle */
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Mif_Complex_t ac_gain;
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/**** Retrieve frequently used parameters... ****/
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cntl_size = PARAM_SIZE(cntl_array);
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freq_size = PARAM_SIZE(freq_array);
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cntl_size = PARAM_SIZE(cntl_array);
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freq_size = PARAM_SIZE(freq_array);
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output_low = PARAM(out_low);
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output_hi = PARAM(out_high);
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d_cycle = PARAM(duty_cycle);
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if(cntl_size != freq_size){
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cm_message_send(triangle_array_error);
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return;
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}
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/* Allocate memory */
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if(INIT==1){
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cm_analog_alloc(INT1,sizeof(double));
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cm_analog_alloc(T1,sizeof(double));
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cm_analog_alloc(T2,sizeof(double));
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cm_analog_alloc(T3,sizeof(double));
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}
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if(ANALYSIS == MIF_DC){
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/* initialize time values */
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t1 = (double *) cm_analog_get_ptr(T1,0);
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t2 = (double *) cm_analog_get_ptr(T2,0);
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t_end = (double *) cm_analog_get_ptr(T3,0);
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*t1 = -1;
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*t2 = -1;
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*t_end = 0;
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OUTPUT(out) = output_low;
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PARTIAL(out,cntl_in) = 0;
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}else
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if(ANALYSIS == MIF_TRAN){
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/* Retrieve previous values and set equal to corresponding variables */
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phase = (double *) cm_analog_get_ptr(INT1,0);
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phase1 = (double *) cm_analog_get_ptr(INT1,1);
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t1 = (double *) cm_analog_get_ptr(T1,1);
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t2 = (double *) cm_analog_get_ptr(T2,1);
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t_end = (double *) cm_analog_get_ptr(T3,1);
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time1 = *t1;
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time2 = *t2;
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t_start = *t_end;
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/* Allocate storage for breakpoint domain & freq. range values */
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x = (double *) calloc((size_t) cntl_size, sizeof(double));
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if (!x) {
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cm_message_send(triangle_allocation_error);
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if(cntl_size != freq_size) {
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cm_message_send(triangle_array_error);
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return;
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}
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y = (double *) calloc((size_t) freq_size, sizeof(double));
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if (!y) {
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cm_message_send(triangle_allocation_error);
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return;
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/* Allocate memory */
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if(INIT==1) {
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cm_analog_alloc(INT1,sizeof(double));
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cm_analog_alloc(T1,sizeof(double));
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cm_analog_alloc(T2,sizeof(double));
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cm_analog_alloc(T3,sizeof(double));
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}
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if(ANALYSIS == MIF_DC) {
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/* Retrieve x and y values. */
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for (i=0; i<cntl_size; i++) {
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*(x+i) = PARAM(cntl_array[i]);
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*(y+i) = PARAM(freq_array[i]);
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}
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/* Retrieve cntl_input value. */
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cntl_input = INPUT(cntl_in);
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/* initialize time values */
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/* Determine segment boundaries within which cntl_input resides */
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t1 = (double *) cm_analog_get_ptr(T1,0);
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t2 = (double *) cm_analog_get_ptr(T2,0);
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t_end = (double *) cm_analog_get_ptr(T3,0);
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/*** cntl_input below lowest cntl_voltage ***/
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if (cntl_input <= *x) {
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*t1 = -1;
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*t2 = -1;
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*t_end = 0;
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dout_din = (*(y+1) - *y)/(*(x+1) - *x);
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freq = *y + (cntl_input - *x) * dout_din;
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OUTPUT(out) = output_low;
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PARTIAL(out,cntl_in) = 0;
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if(freq <= 0){
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cm_message_send(triangle_freq_clamp);
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freq = 1e-16;
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}
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/* freq = *y; */
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}
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else
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/*** cntl_input above highest cntl_voltage ***/
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if (cntl_input >= *(x+cntl_size-1)){
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dout_din = (*(y+cntl_size-1) - *(y+cntl_size-2)) /
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(*(x+cntl_size-1) - *(x+cntl_size-2));
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freq = *(y+cntl_size-1) + (cntl_input - *(x+cntl_size-1)) * dout_din;
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/* freq = *(y+cntl_size-1); */
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} else if(ANALYSIS == MIF_TRAN) {
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} else { /*** cntl_input within bounds of end midpoints...
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must determine position progressively & then
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calculate required output. ***/
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/* Retrieve previous values and set equal to corresponding variables */
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for (i=0; i<cntl_size-1; i++) {
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phase = (double *) cm_analog_get_ptr(INT1,0);
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phase1 = (double *) cm_analog_get_ptr(INT1,1);
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t1 = (double *) cm_analog_get_ptr(T1,1);
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t2 = (double *) cm_analog_get_ptr(T2,1);
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t_end = (double *) cm_analog_get_ptr(T3,1);
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if ((cntl_input < *(x+i+1)) && (cntl_input >= *(x+i))){
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/* Interpolate to the correct frequency value */
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time1 = *t1;
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time2 = *t2;
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t_start = *t_end;
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freq = ((cntl_input - *(x+i))/(*(x+i+1) - *(x+i)))*
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(*(y+i+1)-*(y+i)) + *(y+i);
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}
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}
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/* Allocate storage for breakpoint domain & freq. range values */
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x = (double *) calloc((size_t) cntl_size, sizeof(double));
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if (!x) {
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cm_message_send(triangle_allocation_error);
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return;
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}
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/* Instantaneous phase is the old phase + frequency/(delta time)
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int_cycle is the integer value for the number cycles. */
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y = (double *) calloc((size_t) freq_size, sizeof(double));
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if (!y) {
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cm_message_send(triangle_allocation_error);
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return;
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}
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*phase = *phase1 + freq*(TIME - T(1));
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int_cycle = *phase1;
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dphase = *phase1 - int_cycle;
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/* if the current time is greater than time1, but less than time2,
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calculate time2 and set the temporary breakpoint. */
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if((time1 <= TIME) && (TIME <= time2)){
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time2 = T(1) + (1 - dphase)/freq;
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/* Retrieve x and y values. */
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for (i=0; i<cntl_size; i++) {
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*(x+i) = PARAM(cntl_array[i]);
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*(y+i) = PARAM(freq_array[i]);
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}
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if(TIME < time2){
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cm_analog_set_temp_bkpt(time2);
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}
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/* Retrieve cntl_input value. */
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cntl_input = INPUT(cntl_in);
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/* store the time that the next cycle is scheduled to begin */
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t_start = time2;
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/* set output value */
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OUTPUT(out) = output_hi - ((TIME - time1)/(time2 - time1))*
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(output_hi - output_low);
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/* Determine segment boundaries within which cntl_input resides */
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}else{
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/*** cntl_input below lowest cntl_voltage ***/
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if (cntl_input <= *x) {
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/* otherwise, calculate time1 and time2 and set their respective
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breakpoints */
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dout_din = (*(y+1) - *y)/(*(x+1) - *x);
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freq = *y + (cntl_input - *x) * dout_din;
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if(dphase > d_cycle){
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dphase = dphase - 1.0;
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}
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if(freq <= 0) {
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cm_message_send(triangle_freq_clamp);
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freq = 1e-16;
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}
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/* freq = *y; */
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} else
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/*** cntl_input above highest cntl_voltage ***/
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time1 = T(1) + (d_cycle - dphase)/freq;
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time2 = T(1) + (1 - dphase)/freq;
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if (cntl_input >= *(x+cntl_size-1)) {
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dout_din = (*(y+cntl_size-1) - *(y+cntl_size-2)) /
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(*(x+cntl_size-1) - *(x+cntl_size-2));
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freq = *(y+cntl_size-1) + (cntl_input - *(x+cntl_size-1)) * dout_din;
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/* freq = *(y+cntl_size-1); */
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if((TIME < time1) || (T(1) == 0)){
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cm_analog_set_temp_bkpt(time1);
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}
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} else {
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/*** cntl_input within bounds of end midpoints...
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must determine position progressively & then
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calculate required output. ***/
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cm_analog_set_temp_bkpt(time2);
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for (i=0; i<cntl_size-1; i++) {
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/* set output value */
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OUTPUT(out) = output_low + ((TIME - t_start)/(time1 - t_start))*
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(output_hi - output_low);
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}
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if ((cntl_input < *(x+i+1)) && (cntl_input >= *(x+i))) {
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PARTIAL(out,cntl_in) = 0.0;
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/* Interpolate to the correct frequency value */
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/* set the time values for storage */
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freq = ((cntl_input - *(x+i))/(*(x+i+1) - *(x+i)))*
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(*(y+i+1)-*(y+i)) + *(y+i);
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}
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t1 = (double *) cm_analog_get_ptr(T1,0);
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t2 = (double *) cm_analog_get_ptr(T2,0);
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t_end = (double *) cm_analog_get_ptr(T3,0);
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}
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}
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*t1 = time1;
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*t2 = time2;
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*t_end = t_start;
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/* Instantaneous phase is the old phase + frequency/(delta time)
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int_cycle is the integer value for the number cycles. */
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*phase = *phase1 + freq*(TIME - T(1));
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int_cycle = *phase1;
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dphase = *phase1 - int_cycle;
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/* if the current time is greater than time1, but less than time2,
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calculate time2 and set the temporary breakpoint. */
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if((time1 <= TIME) && (TIME <= time2)) {
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time2 = T(1) + (1 - dphase)/freq;
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if(TIME < time2) {
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cm_analog_set_temp_bkpt(time2);
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}
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/* store the time that the next cycle is scheduled to begin */
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t_start = time2;
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/* set output value */
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OUTPUT(out) = output_hi - ((TIME - time1)/(time2 - time1))*
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(output_hi - output_low);
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} else {
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/* otherwise, calculate time1 and time2 and set their respective
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breakpoints */
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if(dphase > d_cycle) {
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dphase = dphase - 1.0;
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}
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time1 = T(1) + (d_cycle - dphase)/freq;
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time2 = T(1) + (1 - dphase)/freq;
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if((TIME < time1) || (T(1) == 0)) {
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cm_analog_set_temp_bkpt(time1);
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}
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cm_analog_set_temp_bkpt(time2);
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/* set output value */
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OUTPUT(out) = output_low + ((TIME - t_start)/(time1 - t_start))*
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(output_hi - output_low);
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}
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PARTIAL(out,cntl_in) = 0.0;
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/* set the time values for storage */
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t1 = (double *) cm_analog_get_ptr(T1,0);
|
||||
t2 = (double *) cm_analog_get_ptr(T2,0);
|
||||
t_end = (double *) cm_analog_get_ptr(T3,0);
|
||||
|
||||
*t1 = time1;
|
||||
*t2 = time2;
|
||||
*t_end = t_start;
|
||||
|
||||
} else { /* Output AC Gain */
|
||||
|
||||
/* This model has no AC capabilities */
|
||||
/* This model has no AC capabilities */
|
||||
|
||||
ac_gain.real = 0.0;
|
||||
ac_gain.real = 0.0;
|
||||
ac_gain.imag= 0.0;
|
||||
AC_GAIN(out,cntl_in) = ac_gain;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue