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a50079b7ff
implement a deprecated FPU control interface in addition to the standard one. To make this clearer, further deprecate ieeefp.h by not declaring the function prototypes except on architectures that implement them already. Currently i386 and amd64 implement the ieeefp.h interface for compatibility, and for fp[gs]etprec(), which doesn't exist on most other hardware. Powerpc, sparc64, and ia64 partially implement it and probably shouldn't, and other architectures don't implement it at all.
58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*-
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* Copyright (c) 2001 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_IEEEFP_H_
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#define _MACHINE_IEEEFP_H_
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/* Deprecated historical FPU control interface */
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#include <machine/fpu.h>
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typedef int fp_except_t;
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#define FP_X_INV IA64_FPSR_TRAP_VD /* invalid operation exception */
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#define FP_X_DZ IA64_FPSR_TRAP_ZD /* divide-by-zero exception */
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#define FP_X_OFL IA64_FPSR_TRAP_OD /* overflow exception */
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#define FP_X_UFL IA64_FPSR_TRAP_UD /* underflow exception */
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#define FP_X_IMP IA64_FPSR_TRAP_ID /* imprecise(inexact) exception */
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typedef enum {
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FP_RN = 0, /* round to nearest */
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FP_RM, /* round toward minus infinity */
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FP_RP, /* round toward plus infinity */
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FP_RZ /* round toward zero */
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} fp_rnd_t;
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__BEGIN_DECLS
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extern fp_rnd_t fpgetround(void);
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extern fp_rnd_t fpsetround(fp_rnd_t);
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extern fp_except_t fpgetmask(void);
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extern fp_except_t fpsetmask(fp_except_t);
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__END_DECLS
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#endif /* !_MACHINE_IEEEFP_H_ */
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