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5980be9b3c
This work is based in part on code from NetBSD libm, libc and kernel. The library is partly public domain and partly BSD-style licensed.
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/* $NetBSD: ieeefp.h,v 1.9 2011/03/27 05:13:15 mrg Exp $ */
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/*
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* Written by J.T. Conklin, Apr 6, 1995
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* Public domain.
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*/
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#ifndef INCLUDE_IEEEFP_H
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#define INCLUDE_IEEEFP_H
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#include <features.h>
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#include <machine/fenv.h>
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__BEGIN_DECLS
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#if defined(__i386__) || defined(__x86_64__)
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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_DNML FE_DENORMAL /* denormalization 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 (loss of precision) */
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typedef enum
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{
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FP_RN=FE_TONEAREST, /* round to nearest representable num */
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FP_RM=FE_DOWNWARD, /* round toward negative infinity */
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FP_RP=FE_UPWARD, /* round toward positive infinity */
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FP_RZ=FE_TOWARDZERO, /* round to zero (truncate) */
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} fp_rnd;
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typedef enum
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{
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FP_PS = 0, /* 24 bit (single-precision) */
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FP_PRS, /* reserved */
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FP_PD, /* 53 bit (double-precision) */
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FP_PE, /* 64 bit (extended-precision) */
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} fp_prec;
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typedef fp_prec fp_prec_t;
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fp_prec_t fpgetprec(void);
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fp_prec_t fpsetprec(fp_prec_t);
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#endif
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typedef fp_rnd fp_rnd_t;
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typedef fp_except fp_except_t;
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fp_rnd_t fpgetround(void);
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fp_rnd_t fpsetround(fp_rnd_t);
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fp_except_t fpgetmask(void);
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fp_except_t fpsetmask(fp_except_t);
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fp_except_t fpgetsticky(void);
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fp_except_t fpsetsticky(fp_except_t);
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fp_except_t fpresetsticky(fp_except_t);
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__END_DECLS
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#endif /* INCLUDE_IEEEFP_H */
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