45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/*-
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* Based on sys/sparc64/include/ieeefp.h
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* Public domain.
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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 FPU control interface */
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/* FP exception codes */
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#define FP_EXCEPT_INV 8
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#define FP_EXCEPT_DZ 9
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#define FP_EXCEPT_OFL 10
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#define FP_EXCEPT_UFL 11
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#define FP_EXCEPT_IMP 12
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#define FP_EXCEPT_DNML 15
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typedef int fp_except_t;
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#define FP_X_INV (1 << FP_EXCEPT_INV) /* invalid operation exception */
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#define FP_X_DZ (1 << FP_EXCEPT_DZ) /* divide-by-zero exception */
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#define FP_X_OFL (1 << FP_EXCEPT_OFL) /* overflow exception */
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#define FP_X_UFL (1 << FP_EXCEPT_UFL) /* underflow exception */
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#define FP_X_IMP (1 << FP_EXCEPT_IMP) /* imprecise (loss of precision) */
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#define FP_X_DNML (1 << FP_EXCEPT_DNML) /* denormal exception */
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typedef enum {
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FP_RN = (0 << 22), /* round to nearest representable number */
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FP_RP = (1 << 22), /* round toward positive infinity */
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FP_RM = (2 << 22), /* round toward negative infinity */
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FP_RZ = (3 << 22) /* round to zero (truncate) */
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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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