roundi

Capsim Block Documentation

Short Description

This star multiplies the incoming data stream by the parameter "Gain factor" in fixed-point arithmetic.Thestar is capable of doing extended precision arithmetic upto 64 bits result which is to be rounded to at least 32 bits after the fxadd.s star.

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Input Connections
Port Type Name
0 float x
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States
Num Type Name Initial Value Description
0 int numberOutputBuffers
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Declarations


 

	int i, samples, val;
        float input;
        int out1, out0;
	int	sampleOut;



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Initialization Code



 

	if ((numberOutputBuffers = NO_OUTPUT_BUFFERS()) <= 0) {
		fprintf(stdout,"roundi: no output buffers\n");
		return(2);
		}
	for(i=0; i
    
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Main Code



 


for(samples = MIN_AVAIL(); samples >0; --samples) {

	IT_IN(0);
        input = x(0);

	
        for (i=0; i
    
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Wrapup Code



 





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License



/*  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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Description



 

/* roundi.s */
/**********************************************************************
                          roundi()
***********************************************************************
	This star multiplies the incoming data stream by the
	parameter "Gain factor" in fixed-point arithmetic.The
	star is capable of doing extended precision arithmetic
	upto 64 bits result which is to be rounded to at least   
	32 bits after the fxadd.s star.
	Parameters :
	1 - (float) factor : FIR tap coefficient   
	2 - (int)   qbits  : Number of bits to represent the 
			     fraction
	3 - (int)   size   : Total word length including the 
			     integer part and the sign bit
	Buffers:
		input buffer 0: integer samples
		output buffers: Auto fanout type doublePrecInt

roundi


This star multiplies the incoming data stream by the
	parameter "Gain factor" in fixed-point arithmetic.The
	star is capable of doing extended precision arithmetic
	upto 64 bits result which is to be rounded to at least   
	32 bits after the fxadd.s star.
	Parameters :
	1 - (float) factor : FIR tap coefficient   
	2 - (int)   qbits  : Number of bits to represent the 
			     fraction
	3 - (int)   size   : Total word length including the 
			     integer part and the sign bit
	Buffers:
		input buffer 0: integer samples
		output buffers: Auto fanout type doublePrecInt


	Programmer : KARAOGUZ, Jeyhan
	Date       : 9/26/90  
	
*/