/* THIS IS AN UNPUBLISHED WORK CONTAINING CONFIDENTIAL AND PROPRIETARY *
 * INFORMATION.  IF PUBLICATION OCCURS, THE FOLLOWING NOTICE APPLIES:  *
 *     "COPYRIGHT 2000 MICHAEL TSIROULNIKOV, ALL RIGHTS RESERVED"      *

  FILE:         stddefs.h
  LANGUAGE:     C-- (ready for ASM)
  TITLE:        shared declarations
  STATUS:       draft
  REFERENCES:   personal experience + TI DAIS
  PURPOSE:      DSP specific coding standard
  NOTES:

                prefix system:
                    s   signed   (16 bit)
                    u   unsigned (16 bit)
                    l   32 bit
                    a   array of
                    p   ptr to
                    no prefix: composite type

                prefices are stacked:
                    apulXXX means "array of pointers to unsigned long variables".

                allowed exceptions: 
                    names like "acc", "ac0", "t", etc, which are names of DSP registers;
                    local vars: S16 counters like "k", "n", etc.

                module filenames start from 'name'.

                namei.h declares objects visibile within the module.
                all internal definitions start from name_.

                name.h declares objects visibile externally.
                all external definitions start from NAME_.

                all functions definitions are in lower case, with underscores.
                all variable are first-symbol capitalized, without underscore.
                all defines are fully capitalized with underscores.
                local variables do not contain either NAME_ or name_
                static vars, functions, declarations preceeded by double underscore.

                as a rule, one statement per line.
                as a rule, no composite 'if's.

  AUTHOR:       Michael Tsiroulnikov
----------------------------------------------------------------------*/

#ifndef _stddefs_h
#define _stddefs_h

#ifndef TRUE
#define TRUE  (1)
#endif

#ifndef FALSE
#define FALSE (0)
#endif

typedef unsigned short U16;
typedef short S16;
typedef unsigned long  U32;
typedef long S32;

/* for constants only */
#define Q15(x)		((S16)(x*32768.))

/*#define STD_FR_SZ   (40) */

#endif