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.
35 lines
892 B
C
35 lines
892 B
C
/* $OpenBSD: ieeefp.h,v 1.2 1999/01/27 04:46:05 imp Exp $ */
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/*-
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* Written by J.T. Conklin, Apr 11, 1995
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* Public domain.
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*
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* JNPR: ieeefp.h,v 1.1 2006/08/07 05:38:57 katta
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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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typedef int fp_except;
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typedef int fp_except_t;
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#define FP_X_IMP 0x01 /* imprecise (loss of precision) */
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#define FP_X_UFL 0x02 /* underflow exception */
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#define FP_X_OFL 0x04 /* overflow exception */
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#define FP_X_DZ 0x08 /* divide-by-zero exception */
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#define FP_X_INV 0x10 /* invalid operation exception */
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typedef enum {
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FP_RN=0, /* round to nearest representable number */
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FP_RZ=1, /* round to zero (truncate) */
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FP_RP=2, /* round toward positive infinity */
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FP_RM=3 /* round toward negative infinity */
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} fp_rnd;
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typedef fp_rnd fp_rnd_t;
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#endif /* !_MACHINE_IEEEFP_H_ */
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