1*b5ce6e03Schristos /* $NetBSD: ieeefp.h,v 1.10 2016/08/25 07:39:55 christos Exp $ */ 218d9d7e5Scgd 318d9d7e5Scgd /* 418d9d7e5Scgd * Written by J.T. Conklin, Apr 28, 1995 518d9d7e5Scgd * Public domain. 618d9d7e5Scgd */ 718d9d7e5Scgd 818d9d7e5Scgd #ifndef _ALPHA_IEEEFP_H_ 918d9d7e5Scgd #define _ALPHA_IEEEFP_H_ 1018d9d7e5Scgd 1191d4704cSmatt #include <sys/featuretest.h> 1291d4704cSmatt 1391d4704cSmatt #if defined(_NETBSD_SOURCE) || defined(_ISOC99_SOURCE) 1491d4704cSmatt 15253d8526Schristos #include <machine/fenv.h> 1691d4704cSmatt 1791d4704cSmatt #if !defined(_ISOC99_SOURCE) 1891d4704cSmatt 1918d9d7e5Scgd typedef int fp_except; 202df695b1Sross 2191d4704cSmatt #if defined(_KERNEL) 222df695b1Sross 232df695b1Sross #include <sys/param.h> 242df695b1Sross #include <sys/proc.h> 252df695b1Sross #include <machine/fpu.h> 262df695b1Sross #include <machine/alpha.h> 272df695b1Sross 282df695b1Sross /* FP_X_IOV is intentionally omitted from the architecture flags mask */ 292df695b1Sross 302df695b1Sross #define FP_AA_FLAGS (FP_X_INV | FP_X_DZ | FP_X_OFL | FP_X_UFL | FP_X_IMP) 312df695b1Sross 322df695b1Sross #define float_raise(f) \ 3323bc2503Sthorpej do curlwp->l_md.md_flags |= NETBSD_FLAG_TO_FP_C(f); \ 342df695b1Sross while(0) 352df695b1Sross 362df695b1Sross #define float_set_inexact() float_raise(FP_X_IMP) 372df695b1Sross #define float_set_invalid() float_raise(FP_X_INV) 382df695b1Sross #define fpgetround() (alpha_read_fpcr() >> 58 & 3) 392df695b1Sross 4091d4704cSmatt #endif /* _KERNEL */ 412df695b1Sross 4291d4704cSmatt #define FP_X_INV FE_INVALID /* invalid operation exception */ 4391d4704cSmatt #define FP_X_DZ FE_DIVBYZERO /* divide-by-zero exception */ 4491d4704cSmatt #define FP_X_OFL FE_OVERFLOW /* overflow exception */ 4591d4704cSmatt #define FP_X_UFL FE_UNDERFLOW /* underflow exception */ 4691d4704cSmatt #define FP_X_IMP FE_INEXACT /* imprecise (prec. loss; "inexact") */ 47*b5ce6e03Schristos #define FP_X_IOV FE_INTOVF /* integer overflow */ 4818d9d7e5Scgd 492df695b1Sross /* 502df695b1Sross * fp_rnd bits match the fpcr, below, as well as bits 12:11 512df695b1Sross * in fp operate instructions 522df695b1Sross */ 5318d9d7e5Scgd typedef enum { 5491d4704cSmatt FP_RZ = FE_TOWARDZERO, /* round to zero (truncate) */ 5591d4704cSmatt FP_RM = FE_DOWNWARD, /* round toward negative infinity */ 5691d4704cSmatt FP_RN = FE_TONEAREST, /* round to nearest representable number */ 5791d4704cSmatt FP_RP = FE_UPWARD, /* round toward positive infinity */ 582df695b1Sross _FP_DYNAMIC=FP_RP 5918d9d7e5Scgd } fp_rnd; 6018d9d7e5Scgd 6191d4704cSmatt #endif /* !_ISOC99_SOURCE */ 6291d4704cSmatt 6391d4704cSmatt #endif /* _NETBSD_SOURCE || _ISOC99_SOURCE */ 6491d4704cSmatt 6518d9d7e5Scgd #endif /* _ALPHA_IEEEFP_H_ */ 66