kolibrios/programs/develop/libraries/menuetlibc/include/ieeefp.h

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/* Copyright (C) 1998 DJ Delorie, see COPYING.DJ for details */
#ifndef __dj_include_ieeefp_h_
#define __dj_include_ieeefp_h_
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/cdefs.h>
/* #include <machine/ieeefp.h> */
#include <machine/endian.h>
#if BYTE_ORDER == LITTLE_ENDIAN
# define __IEEE_LITTLE_ENDIAN
#endif
/* FLOATING ROUNDING */
typedef int fp_rnd;
#define FP_RN 0 /* Round to nearest */
#define FP_RM 1 /* Round down */
#define FP_RP 2 /* Round up */
#define FP_RZ 3 /* Round to zero (truncate) */
fp_rnd _EXFUN(fpgetround,(void));
fp_rnd _EXFUN(fpsetround, (fp_rnd));
/* EXCEPTIONS */
typedef int fp_except;
#define FP_X_INV 0x10 /* Invalid operation */
#define FP_X_DX 0x80 /* Divide by zero */
#define FP_X_OFL 0x04 /* Overflow exception */
#define FP_X_UFL 0x02 /* Underflow exception */
#define FP_X_IMP 0x01 /* Imprecise exception */
fp_except _EXFUN(fpgetmask,(void));
fp_except _EXFUN(fpsetmask,(fp_except));
fp_except _EXFUN(fpgetsticky,(void));
fp_except _EXFUN(fpsetsticky, (fp_except));
/* INTEGER ROUNDING */
typedef int fp_rdi;
#define FP_RDI_TOZ 0 /* Round to Zero */
#define FP_RDI_RD 1 /* Follow float mode */
fp_rdi _EXFUN(fpgetroundtoi,(void));
fp_rdi _EXFUN(fpsetroundtoi,(fp_rdi));
int _EXFUN(isnan, (double));
int _EXFUN(isinf, (double));
int _EXFUN(finite, (double));
int _EXFUN(isnanf, (float));
int _EXFUN(isinff, (float));
int _EXFUN(finitef, (float));
#define __IEEE_DBL_EXPBIAS 1023
#define __IEEE_FLT_EXPBIAS 127
#define __IEEE_DBL_EXPLEN 11
#define __IEEE_FLT_EXPLEN 8
#define __IEEE_DBL_FRACLEN (64 - (__IEEE_DBL_EXPLEN + 1))
#define __IEEE_FLT_FRACLEN (32 - (__IEEE_FLT_EXPLEN + 1))
#define __IEEE_DBL_MAXPOWTWO ((double)(1L << 32 - 2) * (1L << (32-11) - 32 + 1))
#define __IEEE_FLT_MAXPOWTWO ((float)(1L << (32-8) - 1))
#define __IEEE_DBL_NAN_EXP 0x7ff
#define __IEEE_FLT_NAN_EXP 0xff
#define isnanf(x) (((*(long *)&(x) & 0x7f800000L)==0x7f800000L) && \
((*(long *)&(x) & 0x007fffffL)!=0000000000L))
#define isinff(x) (((*(long *)&(x) & 0x7f800000L)==0x7f800000L) && \
((*(long *)&(x) & 0x007fffffL)==0000000000L))
#define finitef(x) (((*(long *)&(x) & 0x7f800000L)!=0x7f800000L))
#ifdef __cplusplus
}
#endif
#endif /* __dj_include_ieeefp_h_ */