ieeefp.h

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    1 /*-
    2  * Based on sys/sparc64/include/ieeefp.h
    3  * Public domain.
    4  * $FreeBSD$
    5  */
    6 
    7 #ifndef _MACHINE_IEEEFP_H_
    8 #define _MACHINE_IEEEFP_H_
    9 
   10 /* Deprecated FPU control interface */
   11 
   12 /* FP exception codes */
   13 #define FP_EXCEPT_INV   8
   14 #define FP_EXCEPT_DZ    9
   15 #define FP_EXCEPT_OFL   10
   16 #define FP_EXCEPT_UFL   11
   17 #define FP_EXCEPT_IMP   12
   18 #define FP_EXCEPT_DNML  15
   19 
   20 typedef int fp_except_t;
   21 
   22 #define FP_X_INV        (1 << FP_EXCEPT_INV)    /* invalid operation exception */
   23 #define FP_X_DZ         (1 << FP_EXCEPT_DZ)     /* divide-by-zero exception */
   24 #define FP_X_OFL        (1 << FP_EXCEPT_OFL)    /* overflow exception */
   25 #define FP_X_UFL        (1 << FP_EXCEPT_UFL)    /* underflow exception */
   26 #define FP_X_IMP        (1 << FP_EXCEPT_IMP)    /* imprecise (loss of precision) */
   27 #define FP_X_DNML       (1 << FP_EXCEPT_DNML)   /* denormal exception */
   28 
   29 typedef enum {
   30         FP_RN = (0 << 22),      /* round to nearest representable number */
   31         FP_RP = (1 << 22),      /* round toward positive infinity */
   32         FP_RM = (2 << 22),      /* round toward negative infinity */
   33         FP_RZ = (3 << 22)       /* round to zero (truncate) */
   34 } fp_rnd_t;
   35 
   36 __BEGIN_DECLS
   37 extern fp_rnd_t    fpgetround(void);
   38 extern fp_rnd_t    fpsetround(fp_rnd_t);
   39 extern fp_except_t fpgetmask(void);
   40 extern fp_except_t fpsetmask(fp_except_t);
   41 __END_DECLS
   42 
   43 #endif /* _MACHINE_IEEEFP_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/arm64/include/ieeefp.h

FreeBSD/Linux Kernel Cross Reference
sys/arm64/include/ieeefp.h