74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/* $NetBSD: ieeefp.h,v 1.1 2012/12/26 19:43:10 martin Exp $ */
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/*
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* Written by J.T. Conklin, Apr 28, 1995
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* Public domain.
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*/
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#ifndef _IA64_IEEEFP_H_
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#define _IA64_IEEEFP_H_
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#include <sys/featuretest.h>
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#if defined(_NETBSD_SOURCE) || defined(_ISOC99_SOURCE)
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typedef int fenv_t;
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typedef int fexcept_t;
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#define FE_INVALID 0x01 /* invalid operation exception */
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#define FE_DIVBYZERO 0x02 /* divide-by-zero exception */
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#define FE_OVERFLOW 0x04 /* overflow exception */
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#define FE_UNDERFLOW 0x08 /* underflow exception */
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#define FE_INEXACT 0x10 /* imprecise (loss of precision; "inexact") */
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#define FE_IOVERFLOW 0x20 /* integer overflow */
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#define FE_ALL_EXCEPT 0x3f
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/*
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* These bits match the fpcr as well as bits 12:11
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* in fp operate instructions
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*/
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#define FE_TOWARDZERO 0 /* round to zero (truncate) */
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#define FE_DOWNWARD 1 /* round toward negative infinity */
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#define FE_TONEAREST 2 /* round to nearest representable number */
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#define FE_UPWARD 3 /* round toward positive infinity */
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#if !defined(_ISOC99_SOURCE)
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typedef int fp_except;
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#define FP_X_INV FE_INVALID /* invalid operation exception */
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#define FP_X_DZ FE_DIVBYZERO /* divide-by-zero exception */
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#define FP_X_OFL FE_OVERFLOW /* overflow exception */
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#define FP_X_UFL FE_UNDERFLOW /* underflow exception */
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#define FP_X_IMP FE_INEXACT /* imprecise (prec. loss; "inexact") */
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#define FP_X_IOV FE_IOVERFLOW /* integer overflow */
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/*
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* fp_rnd bits match the fpcr, below, as well as bits 12:11
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* in fp operate instructions
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*/
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typedef enum {
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FP_RZ = FE_TOWARDZERO, /* round to zero (truncate) */
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FP_RM = FE_DOWNWARD, /* round toward negative infinity */
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FP_RN = FE_TONEAREST, /* round to nearest representable number */
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FP_RP = FE_UPWARD, /* round toward positive infinity */
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_FP_DYNAMIC=FP_RP
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} fp_rnd;
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#endif /* !_ISOC99_SOURCE */
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#endif /* _NETBSD_SOURCE || _ISOC99_SOURCE */
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#endif /* _IA64_IEEEFP_H_ */
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