95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
/* mathP.h - private definitions for math functions */
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/*
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* Copyright 1990-1992, 1997, 2001, 2010 Wind River Systems, Inc.
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*
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* The right to copy, distribute or otherwise make use of this software
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* may be licensed only pursuant to the terms of an applicable Wind River
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* license agreement.
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*
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*/
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/*
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modification history
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--------------------
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01j,16apr10,mcm Fixed WIND00192604 - the structure DOUBLE had not been
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adapted to LP64. The members l1 and l2 should be 32-bit
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integers not long.
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01i,03oct01,to use IEEE little endian for ARM
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01h,23jan97,cdp reverse words in double for ARM.
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01g,22sep92,rrr added support for c++
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01f,04sep92,wmd modified definition of DOUBLE for BIG/LITTLE ENDIAN architectures.
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01e,30jul92,kdl added fp type test macros; deleted declarations of unused
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routines (isnan(), etc.); changed _d_type() to fpTypeGet();
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deleted prototypes for _dNormalize, _finite, _upscale.
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01d,30jul92,kdl added DOUBLE union definition, from floatLib.c.
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01c,08jul92,smb added to clib library.
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01b,04oct91,rrr passed through the ansification filter
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-fixed #else and #endif
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-changed copyright notice
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01a,14sep90,mcl adapted from Berkeley.
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*/
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#ifndef __INCmathPh
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#define __INCmathPh
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ZERO 0
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#define REAL 1
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#define INTEGER 2
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#define INF 3
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#define NAN 4
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#define isNan(num) ((fpTypeGet (num, 0)) == NAN)
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#define isZero(num) ((fpTypeGet (num, 0)) == ZERO)
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#define isInf(num) ((fpTypeGet (num, 0)) == INF)
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typedef union
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{
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unsigned p_mant[2];
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double p_double;
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} __cv_type;
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#define p_mantlow p_mant[0]
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#define p_manthigh p_mant[1]
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typedef union /* DOUBLE */
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{
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double ddat;
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#if (_BYTE_ORDER == _BIG_ENDIAN)
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struct
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{
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int l1;
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int l2;
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} ldat;
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#else
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struct
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{
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int l2;
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int l1;
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} ldat;
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#endif /* _BYTE_ORDER == _BIG_ENDIAN */
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} DOUBLE;
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/* function declarations */
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#if defined(__STDC__) || defined(__cplusplus)
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extern int fpTypeGet (double v, double *r);
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#else /* __STDC__ */
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extern int fpTypeGet();
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#endif /* __STDC__ */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCmathPh */
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