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325 lines
14 KiB
C
325 lines
14 KiB
C
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/*************************** Fraunhofer IIS FDK Tools **********************
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(C) Copyright Fraunhofer IIS (2002)
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All Rights Reserved
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Please be advised that this software and/or program delivery is
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Confidential Information of Fraunhofer and subject to and covered by the
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Fraunhofer IIS Software Evaluation Agreement
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between Google Inc. and Fraunhofer
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effective and in full force since March 1, 2012.
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You may use this software and/or program only under the terms and
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conditions described in the above mentioned Fraunhofer IIS Software
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Evaluation Agreement. Any other and/or further use requires a separate agreement.
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$Id$
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Author(s): M. Lohwasser, M. Gayer
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Description: Flexible fixpoint library configuration
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This software and/or program is protected by copyright law and international
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treaties. Any reproduction or distribution of this software and/or program,
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or any portion of it, may result in severe civil and criminal penalties, and
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will be prosecuted to the maximum extent possible under law.
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******************************************************************************/
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#ifndef _COMMON_FIX_H
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#define _COMMON_FIX_H
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#include "FDK_archdef.h"
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#include "machine_type.h"
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/* ***** Start of former fix.h ****** */
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/* Configure fractional or integer arithmetic */
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#define FIX_FRACT 0 /* Define this to "1" to use fractional arithmetic simulation in class fract instead of integer arithmetic */
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/* 1 for debug with extra runtime overflow checking. */
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/* Truncate -1.0 to -1.0 + 1/(D)FRACT_FIX_SCALE */
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//#define FRACT_TRUNC_MINUSONE
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/* Define bit sizes of integer fixpoint fractional data types */
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#define FRACT_BITS 16 /* single precision */
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#define DFRACT_BITS 32 /* double precision */
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#define ACCU_BITS 40 /* double precision plus overflow */
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/* Fixpoint equivalent type fot PCM audio time domain data. */
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#if defined(SAMPLE_BITS)
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#if (SAMPLE_BITS == DFRACT_BITS)
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#define FIXP_PCM FIXP_DBL
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#define FX_PCM2FX_DBL(x) ((FIXP_DBL)(x))
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#define FX_DBL2FX_PCM(x) ((INT_PCM)(x))
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#elif (SAMPLE_BITS == FRACT_BITS)
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#define FIXP_PCM FIXP_SGL
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#define FX_PCM2FX_DBL(x) FX_SGL2FX_DBL((FIXP_SGL)(x))
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#define FX_DBL2FX_PCM(x) FX_DBL2FX_SGL(x)
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#else
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#error SAMPLE_BITS different from FRACT_BITS or DFRACT_BITS not implemented!
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#endif
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#endif
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/* ****** End of former fix.h ****** */
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#define SGL_MASK ((1UL<<FRACT_BITS)-1) /* 16bit: (2^16)-1 = 0xFFFF */
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#define MAX_SHIFT_SGL (FRACT_BITS-1) /* maximum possible shift for FIXP_SGL values */
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#define MAX_SHIFT_DBL (DFRACT_BITS-1) /* maximum possible shift for FIXP_DBL values */
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/* Scale factor from/to float/fixpoint values. DO NOT USE THESE VALUES AS SATURATION LIMITS !! */
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#define FRACT_FIX_SCALE ((INT64(1)<<(FRACT_BITS-1)))
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#define DFRACT_FIX_SCALE ((INT64(1)<<(DFRACT_BITS-1)))
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/* Max and Min values for saturation purposes. DO NOT USE THESE VALUES AS SCALE VALUES !! */
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#define MAXVAL_SGL ((signed)0x00007FFF) /* this has to be synchronized to FRACT_BITS */
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#define MINVAL_SGL ((signed)0xFFFF8000) /* this has to be synchronized to FRACT_BITS */
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#define MAXVAL_DBL ((signed)0x7FFFFFFF) /* this has to be synchronized to DFRACT_BITS */
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#define MINVAL_DBL ((signed)0x80000000) /* this has to be synchronized to DFRACT_BITS */
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#define FX_DBL2FXCONST_SGL(val) ( ( ((((val) >> (DFRACT_BITS-FRACT_BITS-1)) + 1) > (((LONG)1<<FRACT_BITS)-1)) && ((LONG)(val) > 0) ) ? \
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(FIXP_SGL)(SHORT)(((LONG)1<<(FRACT_BITS-1))-1):(FIXP_SGL)(SHORT)((((val) >> (DFRACT_BITS-FRACT_BITS-1)) + 1) >> 1) )
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#define shouldBeUnion union /* unions are possible */
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typedef SHORT FIXP_SGL;
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typedef LONG FIXP_DBL;
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/* macros for compile-time conversion of constant float values to fixedpoint */
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#define FL2FXCONST_SPC FL2FXCONST_DBL
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#ifdef FRACT_TRUNC_MINUSONE
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#define MINVAL_DBL_CONST MINVAL_DBL+1
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#define MINVAL_SGL_CONST MINVAL_SGL+1
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#else
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#define MINVAL_DBL_CONST MINVAL_DBL
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#define MINVAL_SGL_CONST MINVAL_SGL
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#endif
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#define FL2FXCONST_SGL(val) \
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(FIXP_SGL)( ( (val) >= 0) ? \
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((( (double)(val) * (FRACT_FIX_SCALE) + 0.5 ) >= (double)(MAXVAL_SGL) ) ? (SHORT)(MAXVAL_SGL) : (SHORT)( (double)(val) * (double)(FRACT_FIX_SCALE) + 0.5)) : \
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((( (double)(val) * (FRACT_FIX_SCALE) - 0.5) <= (double)(MINVAL_SGL_CONST) ) ? (SHORT)(MINVAL_SGL_CONST) : (SHORT)( (double)(val) * (double)(FRACT_FIX_SCALE) - 0.5)) )
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#define FL2FXCONST_DBL(val) \
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(FIXP_DBL)( ( (val) >= 0) ? \
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((( (double)(val) * (DFRACT_FIX_SCALE) + 0.5 ) >= (double)(MAXVAL_DBL) ) ? (LONG)(MAXVAL_DBL) : (LONG)( (double)(val) * (double)(DFRACT_FIX_SCALE) + 0.5)) : \
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((( (double)(val) * (DFRACT_FIX_SCALE) - 0.5) <= (double)(MINVAL_DBL_CONST) ) ? (LONG)(MINVAL_DBL_CONST) : (LONG)( (double)(val) * (double)(DFRACT_FIX_SCALE) - 0.5)) )
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/* macros for runtime conversion of float values to integer fixedpoint. NO OVERFLOW CHECK!!! */
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#define FL2FX_SPC FL2FX_DBL
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#define FL2FX_SGL(val) ( (val)>0.0f ? (SHORT)( (val)*(float)(FRACT_FIX_SCALE)+0.5f ) : (SHORT)( (val)*(float)(FRACT_FIX_SCALE)-0.5f ) )
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#define FL2FX_DBL(val) ( (val)>0.0f ? (LONG)( (val)*(float)(DFRACT_FIX_SCALE)+0.5f ) : (LONG)( (val)*(float)(DFRACT_FIX_SCALE)-0.5f ) )
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/* macros for runtime conversion of fixedpoint values to other fixedpoint. NO ROUNDING!!! */
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#define FX_ACC2FX_SGL(val) ((FIXP_SGL)((val)>>(ACCU_BITS-FRACT_BITS)))
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#define FX_ACC2FX_DBL(val) ((FIXP_DBL)((val)>>(ACCU_BITS-DFRACT_BITS)))
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#define FX_SGL2FX_ACC(val) ((FIXP_ACC)((LONG)(val)<<(ACCU_BITS-FRACT_BITS)))
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#define FX_SGL2FX_DBL(val) ((FIXP_DBL)((LONG)(val)<<(DFRACT_BITS-FRACT_BITS)))
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#define FX_DBL2FX_SGL(val) ((FIXP_SGL)((val)>>(DFRACT_BITS-FRACT_BITS)))
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/* ############################################################# */
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/* macros for runtime conversion of integer fixedpoint values to float. */
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/* This is just for temporary use and should not be required in a final version! */
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/* #define FX_DBL2FL(val) ((float)(pow(2.,-31.)*(float)val)) */ /* version #1 */
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#define FX_DBL2FL(val) ((float)((double)(val)/(double)DFRACT_FIX_SCALE)) /* version #2 - identical to class dfract cast from dfract to float */
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/* ############################################################# */
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#include "fixmul.h"
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FDK_INLINE LONG fMult(SHORT a, SHORT b) { return fixmul_SS(a, b); }
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FDK_INLINE LONG fMult(SHORT a, LONG b) { return fixmul_SD(a, b); }
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FDK_INLINE LONG fMult(LONG a, SHORT b) { return fixmul_DS(a, b); }
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FDK_INLINE LONG fMult(LONG a, LONG b) { return fixmul_DD(a, b); }
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FDK_INLINE LONG fPow2(LONG a) { return fixpow2_D(a); }
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FDK_INLINE LONG fPow2(SHORT a) { return fixpow2_S(a); }
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FDK_INLINE INT fMultI(LONG a, SHORT b) { return ( (INT)(((1<<(FRACT_BITS-2)) +
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fixmuldiv2_DD(a,((INT)b<<FRACT_BITS)))>>(FRACT_BITS-1)) ); }
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FDK_INLINE INT fMultIfloor(LONG a, INT b) { return ( (INT)((1 +
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fixmuldiv2_DD(a,(b<<FRACT_BITS))) >> (FRACT_BITS-1)) ); }
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FDK_INLINE INT fMultIceil(LONG a, INT b) { return ( (INT)(((INT)0x7fff +
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fixmuldiv2_DD(a,(b<<FRACT_BITS))) >> (FRACT_BITS-1)) ); }
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FDK_INLINE LONG fMultDiv2(SHORT a, SHORT b) { return fixmuldiv2_SS(a, b); }
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FDK_INLINE LONG fMultDiv2(SHORT a, LONG b) { return fixmuldiv2_SD(a, b); }
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FDK_INLINE LONG fMultDiv2(LONG a, SHORT b) { return fixmuldiv2_DS(a, b); }
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FDK_INLINE LONG fMultDiv2(LONG a, LONG b) { return fixmuldiv2_DD(a, b); }
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FDK_INLINE LONG fPow2Div2(LONG a) { return fixpow2div2_D(a); }
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FDK_INLINE LONG fPow2Div2(SHORT a) { return fixpow2div2_S(a); }
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FDK_INLINE LONG fMultDiv2BitExact(LONG a, LONG b) { return fixmuldiv2BitExact_DD(a, b); }
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FDK_INLINE LONG fMultDiv2BitExact(SHORT a, LONG b) { return fixmuldiv2BitExact_SD(a, b); }
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FDK_INLINE LONG fMultDiv2BitExact(LONG a, SHORT b) { return fixmuldiv2BitExact_DS(a, b); }
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FDK_INLINE LONG fMultBitExact(LONG a, LONG b) { return fixmulBitExact_DD(a, b); }
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FDK_INLINE LONG fMultBitExact(SHORT a, LONG b) { return fixmulBitExact_SD(a, b); }
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FDK_INLINE LONG fMultBitExact(LONG a, SHORT b) { return fixmulBitExact_DS(a, b); }
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/* ******************************************************************************** */
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#include "abs.h"
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FDK_INLINE FIXP_DBL fAbs(FIXP_DBL x)
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{ return fixabs_D(x); }
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FDK_INLINE FIXP_SGL fAbs(FIXP_SGL x)
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{ return fixabs_S(x); }
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/* workaround for TI C6x compiler but not for TI ARM9E compiler */
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#if (!defined(__TI_COMPILER_VERSION__) || defined(__TI_TMS470_V5__)) && !defined(__x86_64__)
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FDK_INLINE INT fAbs(INT x)
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{ return fixabs_I(x); }
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#endif
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/* ******************************************************************************** */
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#include "clz.h"
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FDK_INLINE INT fNormz(FIXP_DBL x)
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{ return fixnormz_D(x); }
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FDK_INLINE INT fNormz(FIXP_SGL x)
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{ return fixnormz_S(x); }
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FDK_INLINE INT fNorm(FIXP_DBL x)
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{ return fixnorm_D(x); }
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FDK_INLINE INT fNorm(FIXP_SGL x)
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{ return fixnorm_S(x); }
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/* ******************************************************************************** */
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/* ******************************************************************************** */
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/* ******************************************************************************** */
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#include "clz.h"
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#define fixp_abs(x) fAbs(x)
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#define fixMin(a,b) fMin(a,b)
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#define fixMax(a,b) fMax(a,b)
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#define CntLeadingZeros(x) fixnormz_D(x)
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#define CountLeadingBits(x) fixnorm_D(x)
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#include "fixmadd.h"
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/* y = (x+0.5*a*b) */
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FDK_INLINE FIXP_DBL fMultAddDiv2(FIXP_DBL x, FIXP_DBL a, FIXP_DBL b)
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{ return fixmadddiv2_DD(x, a, b); }
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FDK_INLINE FIXP_DBL fMultAddDiv2(FIXP_DBL x, FIXP_SGL a, FIXP_DBL b)
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{ return fixmadddiv2_SD(x, a, b); }
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FDK_INLINE FIXP_DBL fMultAddDiv2(FIXP_DBL x, FIXP_DBL a, FIXP_SGL b)
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{ return fixmadddiv2_DS(x, a, b); }
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FDK_INLINE FIXP_DBL fMultAddDiv2(FIXP_DBL x, FIXP_SGL a, FIXP_SGL b)
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{ return fixmadddiv2_SS(x, a, b); }
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FDK_INLINE FIXP_DBL fPow2AddDiv2(FIXP_DBL x, FIXP_DBL a)
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{ return fixpadddiv2_D(x, a); }
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FDK_INLINE FIXP_DBL fPow2AddDiv2(FIXP_DBL x, FIXP_SGL a)
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{ return fixpadddiv2_S(x, a); }
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/* y = 2*(x+0.5*a*b) = (2x+a*b) */
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FDK_INLINE FIXP_DBL fMultAdd(FIXP_DBL x, FIXP_DBL a, FIXP_DBL b)
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{ return fixmadd_DD(x, a, b); }
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inline FIXP_DBL fMultAdd(FIXP_DBL x, FIXP_SGL a, FIXP_DBL b)
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{ return fixmadd_SD(x, a, b); }
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inline FIXP_DBL fMultAdd(FIXP_DBL x, FIXP_DBL a, FIXP_SGL b)
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{ return fixmadd_DS(x, a, b); }
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inline FIXP_DBL fMultAdd(FIXP_DBL x, FIXP_SGL a, FIXP_SGL b)
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{ return fixmadd_SS(x, a, b); }
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inline FIXP_DBL fPow2Add(FIXP_DBL x, FIXP_DBL a)
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{ return fixpadd_D(x, a); }
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inline FIXP_DBL fPow2Add(FIXP_DBL x, FIXP_SGL a)
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{ return fixpadd_S(x, a); }
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/* y = (x-0.5*a*b) */
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inline FIXP_DBL fMultSubDiv2(FIXP_DBL x, FIXP_DBL a, FIXP_DBL b)
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{ return fixmsubdiv2_DD(x, a, b); }
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inline FIXP_DBL fMultSubDiv2(FIXP_DBL x, FIXP_SGL a, FIXP_DBL b)
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{ return fixmsubdiv2_SD(x, a, b); }
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inline FIXP_DBL fMultSubDiv2(FIXP_DBL x, FIXP_DBL a, FIXP_SGL b)
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{ return fixmsubdiv2_DS(x, a, b); }
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inline FIXP_DBL fMultSubDiv2(FIXP_DBL x, FIXP_SGL a, FIXP_SGL b)
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{ return fixmsubdiv2_SS(x, a, b); }
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/* y = 2*(x-0.5*a*b) = (2*x-a*b) */
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FDK_INLINE FIXP_DBL fMultSub(FIXP_DBL x, FIXP_DBL a, FIXP_DBL b)
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{ return fixmsub_DD(x, a, b); }
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inline FIXP_DBL fMultSub(FIXP_DBL x, FIXP_SGL a, FIXP_DBL b)
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{ return fixmsub_SD(x, a, b); }
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inline FIXP_DBL fMultSub(FIXP_DBL x, FIXP_DBL a, FIXP_SGL b)
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{ return fixmsub_DS(x, a, b); }
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inline FIXP_DBL fMultSub(FIXP_DBL x, FIXP_SGL a, FIXP_SGL b)
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{ return fixmsub_SS(x, a, b); }
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FDK_INLINE FIXP_DBL fMultAddDiv2BitExact(FIXP_DBL x, FIXP_DBL a, FIXP_DBL b)
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{ return fixmadddiv2BitExact_DD(x, a, b); }
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FDK_INLINE FIXP_DBL fMultAddDiv2BitExact(FIXP_DBL x, FIXP_SGL a, FIXP_DBL b)
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{ return fixmadddiv2BitExact_SD(x, a, b); }
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FDK_INLINE FIXP_DBL fMultAddDiv2BitExact(FIXP_DBL x, FIXP_DBL a, FIXP_SGL b)
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{ return fixmadddiv2BitExact_DS(x, a, b); }
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FDK_INLINE FIXP_DBL fMultSubDiv2BitExact(FIXP_DBL x, FIXP_DBL a, FIXP_DBL b)
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{ return fixmsubdiv2BitExact_DD(x, a, b); }
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FDK_INLINE FIXP_DBL fMultSubDiv2BitExact(FIXP_DBL x, FIXP_SGL a, FIXP_DBL b)
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{ return fixmsubdiv2BitExact_SD(x, a, b); }
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FDK_INLINE FIXP_DBL fMultSubDiv2BitExact(FIXP_DBL x, FIXP_DBL a, FIXP_SGL b)
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{ return fixmsubdiv2BitExact_DS(x, a, b); }
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#include "fixminmax.h"
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FDK_INLINE FIXP_DBL fMin(FIXP_DBL a, FIXP_DBL b)
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{ return fixmin_D(a,b); }
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FDK_INLINE FIXP_DBL fMax(FIXP_DBL a, FIXP_DBL b)
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{ return fixmax_D(a,b); }
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FDK_INLINE FIXP_SGL fMin(FIXP_SGL a, FIXP_SGL b)
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{ return fixmin_S(a,b); }
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FDK_INLINE FIXP_SGL fMax(FIXP_SGL a, FIXP_SGL b)
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{ return fixmax_S(a,b); }
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/* workaround for TI C6x compiler but not for TI ARM9E */
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||
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|
#if ((!defined(__TI_COMPILER_VERSION__) || defined(__TI_TMS470_V5__)) && !defined(__x86_64__)) || (FIX_FRACT == 1)
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||
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FDK_INLINE INT fMax(INT a, INT b)
|
||
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{ return fixmax_I(a,b); }
|
||
|
|
FDK_INLINE INT fMin(INT a, INT b)
|
||
|
|
{ return fixmin_I(a,b); }
|
||
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#endif
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inline UINT fMax(UINT a, UINT b)
|
||
|
|
{ return fixmax_UI(a,b); }
|
||
|
|
inline UINT fMin(UINT a, UINT b)
|
||
|
|
{ return fixmin_UI(a,b); }
|
||
|
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|
||
|
|
/* Complex data types */
|
||
|
|
typedef shouldBeUnion {
|
||
|
|
/* vector representation for arithmetic */
|
||
|
|
struct {
|
||
|
|
FIXP_SGL re;
|
||
|
|
FIXP_SGL im;
|
||
|
|
} v;
|
||
|
|
/* word representation for memory move */
|
||
|
|
LONG w;
|
||
|
|
} FIXP_SPK;
|
||
|
|
|
||
|
|
typedef shouldBeUnion {
|
||
|
|
/* vector representation for arithmetic */
|
||
|
|
struct {
|
||
|
|
FIXP_DBL re;
|
||
|
|
FIXP_DBL im;
|
||
|
|
} v;
|
||
|
|
/* word representation for memory move */
|
||
|
|
INT64 w;
|
||
|
|
} FIXP_DPK;
|
||
|
|
|
||
|
|
#include "fixmul.h"
|
||
|
|
#include "fixmadd.h"
|
||
|
|
#include "cplx_mul.h"
|
||
|
|
#include "scale.h"
|
||
|
|
#include "fixpoint_math.h"
|
||
|
|
|
||
|
|
#endif
|