Capsim Block Documentation
This star compares two data streams for "equality" (use for BER). Appends to file.
Port | Type | Name | |
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0 | float | w | |
1 | float | x |
Num | Type | Name | Description |
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0 | float | BlockName_ber | The bit error rate (BER) |
Num | Type | Name | Initial Value | Description |
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0 | int | samples | 0 | |
1 | int | error_count | 0 | |
2 | int | hits | 0 | |
3 | int | obufs | ||
4 | FILE* | fp |
int i,j; int numin; int err_out; char theVar[100]; char theName[100]; #ifdef TCL_SUPPORT Tcl_Obj *varNameObj_P; Tcl_Obj *objVar_P; #endif |
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fp=fopen(fileName,"a"); if(!fp) { fprintf(stderr, "ecountfap: could not open file : %s for append\n",fileName); return(2); } obufs = NO_OUTPUT_BUFFERS(); |
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numin = MIN_AVAIL(); for(i=0; i |
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fprintf(stderr,"ecount: hits/samples = %d/%d (ignore %d) BER = %d/%d = %.4g\n", hits, samples, samples>ignore? ignore:samples, error_count, samples>ignore? samples-ignore:0, samples>ignore? (float)error_count/(samples-ignore):0); fprintf(fp,"%d %d %d %d %d %.4g \n", hits, samples, samples>ignore? ignore:samples, error_count, samples>ignore? samples-ignore:0, samples>ignore? (float)error_count/(samples-ignore):0); fclose(fp); #ifdef TCL_SUPPORT if(!krn_TCL_Interp) { return(0); } sprintf(theVar,"%.4g",samples>ignore? (float)error_count/(samples-ignore):0); sprintf(theName,"%s_ber",STAR_NAME); varNameObj_P=Tcl_NewStringObj(theName, strlen(theName)); objVar_P=Tcl_NewObj(); Tcl_SetDoubleObj(objVar_P,samples>ignore? (float)error_count/(samples-ignore):0); Tcl_ObjSetVar2(krn_TCL_Interp,varNameObj_P,NULL,objVar_P,TCL_NAMESPACE_ONLY); #endif |
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/* Capsim (r) Text Mode Kernel (TMK) Star Library (Blocks) Copyright (C) 1989-2017 Silicon DSP Corporation This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA http://www.silicondsp.com Silicon DSP Corporation Las Vegas, Nevada */ |
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/********************************************************************** ecountfap() *********************************************************************** "error counter" This star compares two data streams for "equality". (Since the input streams are floating point, a guard band is used.) An output stream is created, with 'zero' output for equality, and 'one' if there is a difference. (Note: the output stream is optional--if no star is connected to the output, there is no output.) Param. 1 selects an initial number of samples to be ignored for the final error tally (used during training sequences); default zero. Param 2 sets an index, after which a message is printed to stderr for each error. It defaults to "infinity", i.e. no error messages. This star prints a final message to stderr giving the error rate (errors/smpl), disregarding the initial ignored samples. |
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