/* ======================================================================== */
/* TEXAS INSTRUMENTS, INC. */
/* */
/* DSPLIB DSP Signal Processing Library */
/* */
/* Release: Version 1.02 */
/* CVS Revision: 1.4 Sun Mar 10 00:34:40 2002 (UTC) */
/* Snapshot date: 18-Apr-2002 */
/* */
/* This library contains proprietary intellectual property of Texas */
/* Instruments, Inc. The library and its source code are protected by */
/* various copyrights, and portions may also be protected by patents or */
/* other legal protections. */
/* */
/* This software is licensed for use with Texas Instruments TMS320 */
/* family DSPs. This license was provided to you prior to installing */
/* the software. You may review this license by consulting the file */
/* TI_license.PDF which accompanies the files in this library. */
/* ------------------------------------------------------------------------ */
/* Copyright (C) 2002 Texas Instruments, Incorporated. */
/* All Rights Reserved. */
/* ======================================================================== */
/* ======================================================================== */
/* */
/* TEXAS INSTRUMENTS, INC. */
/* */
/* NAME */
/* DSP_fltoq15 */
/* */
/* REVISION DATE */
/* 27-Jul-2001 */
/* */
/* USAGE */
/* This routine is C-callable and can be called as: */
/* */
/* void DSP_fltoq15 */
/* ( */
/* const float *restrict x, */
/* short *restrict r, */
/* int nx */
/* ); */
/* */
/* x[nx] : Pointer to values of type float */
/* r[nx] : Contains Q15 values of x[nx] */
/* nx : Number of elements in arrays */
/* */
/* DESCRIPTION */
/* Convert the IEEE floating point numbers stored in vector x[] into */
/* Q.15 format numbers stored in vector r[]. Results will be rounded */
/* towards negative infinity. All values that exceed the size limit */
/* will be saturated to 0x7fff if value is positive and 0x8000 if */
/* value is negative. */
/* */
/* C CODE */
/* void DSP_fltoq15 */
/* ( */
/* const float *restrict x, */
/* short *restrict r, */
/* int nx */
/* ) */
/* { */
/* int i, a; */
/* */
/* for(i = 0; i < nx; i++) */
/* { */
/* a = floor(32768 * x[i]); */
/* */
/* // saturate to 16-bit // */
/* if (a>32767) a = 32767; */
/* if (a<-32768) a = -32768; */
/* */
/* r[i] = (short) a; */
/* } */
/* } */
/* */
/* TECHNIQUES */
/* Loop is unrolled twice. */
/* Collapsed 1 epilog stage, 2 prolog stages */
/* */
/* ASSUMPTIONS */
/* nx >= 2 and a multiple of 2 */
/* */
/* NOTES */
/* This code is interrupt-tolerant but not interruptible. */
/* This implementation is ENDIAN NEUTRAL. */
/* */
/* CYCLES */
/* 7 * nx/2 + 12 */
/* */
/* CODESIZE */
/* 320 bytes */
/* */
/* ------------------------------------------------------------------------ */
/* Copyright (c) 2002 Texas Instruments, Incorporated. */
/* All Rights Reserved. */
/* ======================================================================== */
#ifndef DSP_FLTOQ15_H_
#define DSP_FLTOQ15_H_ 1
void DSP_fltoq15
(
const float *restrict x,
short *restrict r,
int nx
);
#endif
/* ======================================================================== */
/* End of file: dsp_fltoq15.h */
/* ------------------------------------------------------------------------ */
/* Copyright (c) 2002 Texas Instruments, Incorporated. */
/* All Rights Reserved. */
/* ======================================================================== */