diff options
Diffstat (limited to 'arch/mips/math-emu/ieee754dp.h')
| -rw-r--r-- | arch/mips/math-emu/ieee754dp.h | 70 | 
1 files changed, 35 insertions, 35 deletions
diff --git a/arch/mips/math-emu/ieee754dp.h b/arch/mips/math-emu/ieee754dp.h index f139c724c59..61fd6fd3135 100644 --- a/arch/mips/math-emu/ieee754dp.h +++ b/arch/mips/math-emu/ieee754dp.h @@ -6,8 +6,6 @@   * MIPS floating point support   * Copyright (C) 1994-2000 Algorithmics Ltd.   * - * ######################################################################## - *   *  This program is free software; you can distribute it and/or modify it   *  under the terms of the GNU General Public License (Version 2) as   *  published by the Free Software Foundation. @@ -19,64 +17,66 @@   *   *  You should have received a copy of the GNU General Public License along   *  with this program; if not, write to the Free Software Foundation, Inc., - *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * ######################################################################## + *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.   */ +#include <linux/compiler.h>  #include "ieee754int.h"  #define assert(expr) ((void)0) +#define DP_EBIAS	1023 +#define DP_EMIN		(-1022) +#define DP_EMAX		1023 +#define DP_FBITS	52 +#define DP_MBITS	52 + +#define DP_MBIT(x)	((u64)1 << (x)) +#define DP_HIDDEN_BIT	DP_MBIT(DP_FBITS) +#define DP_SIGN_BIT	DP_MBIT(63) + +#define DPSIGN(dp)	(dp.sign) +#define DPBEXP(dp)	(dp.bexp) +#define DPMANT(dp)	(dp.mant) + +static inline int ieee754dp_finite(union ieee754dp x) +{ +	return DPBEXP(x) != DP_EMAX + 1 + DP_EBIAS; +} +  /* 3bit extended double precision sticky right shift */  #define XDPSRS(v,rs)	\ -  ((rs > (DP_MBITS+3))?1:((v) >> (rs)) | ((v) << (64-(rs)) != 0)) +	((rs > (DP_FBITS+3))?1:((v) >> (rs)) | ((v) << (64-(rs)) != 0))  #define XDPSRSX1() \ -  (xe++, (xm = (xm >> 1) | (xm & 1))) +	(xe++, (xm = (xm >> 1) | (xm & 1)))  #define XDPSRS1(v)	\ -  (((v) >> 1) | ((v) & 1)) +	(((v) >> 1) | ((v) & 1))  /* convert denormal to normalized with extended exponent */  #define DPDNORMx(m,e) \ -  while( (m >> DP_MBITS) == 0) { m <<= 1; e--; } +	while ((m >> DP_FBITS) == 0) { m <<= 1; e--; }  #define DPDNORMX	DPDNORMx(xm, xe)  #define DPDNORMY	DPDNORMx(ym, ye) -static inline ieee754dp builddp(int s, int bx, u64 m) +static inline union ieee754dp builddp(int s, int bx, u64 m)  { -	ieee754dp r; +	union ieee754dp r;  	assert((s) == 0 || (s) == 1);  	assert((bx) >= DP_EMIN - 1 + DP_EBIAS  	       && (bx) <= DP_EMAX + 1 + DP_EBIAS); -	assert(((m) >> DP_MBITS) == 0); +	assert(((m) >> DP_FBITS) == 0); -	r.parts.sign = s; -	r.parts.bexp = bx; -	r.parts.mant = m; -	return r; -} +	r.sign = s; +	r.bexp = bx; +	r.mant = m; -extern int ieee754dp_isnan(ieee754dp); -extern int ieee754dp_issnan(ieee754dp); -extern int ieee754si_xcpt(int, const char *, ...); -extern s64 ieee754di_xcpt(s64, const char *, ...); -extern ieee754dp ieee754dp_xcpt(ieee754dp, const char *, ...); -extern ieee754dp ieee754dp_nanxcpt(ieee754dp, const char *, ...); -extern ieee754dp ieee754dp_bestnan(ieee754dp, ieee754dp); -extern ieee754dp ieee754dp_format(int, int, u64); - - -#define DPNORMRET2(s, e, m, name, a0, a1) \ -{ \ -    ieee754dp V = ieee754dp_format(s, e, m); \ -    if(TSTX()) \ -      return ieee754dp_xcpt(V, name, a0, a1); \ -    else \ -      return V; \ +	return r;  } -#define DPNORMRET1(s, e, m, name, a0)  DPNORMRET2(s, e, m, name, a0, a0) +extern int ieee754dp_isnan(union ieee754dp); +extern union ieee754dp __cold ieee754dp_nanxcpt(union ieee754dp); +extern union ieee754dp ieee754dp_format(int, int, u64);  | 
