diff options
Diffstat (limited to '9/platforms/android-19/arch-mips64/usr/include/machine/ieee.h')
| -rw-r--r-- | 9/platforms/android-19/arch-mips64/usr/include/machine/ieee.h | 181 |
1 files changed, 65 insertions, 116 deletions
diff --git a/9/platforms/android-19/arch-mips64/usr/include/machine/ieee.h b/9/platforms/android-19/arch-mips64/usr/include/machine/ieee.h index 520a77b..c579969 100644 --- a/9/platforms/android-19/arch-mips64/usr/include/machine/ieee.h +++ b/9/platforms/android-19/arch-mips64/usr/include/machine/ieee.h @@ -1,4 +1,5 @@ -/* $OpenBSD: ieee.h,v 1.4 2010/01/23 19:11:21 miod Exp $ */ +/* $OpenBSD: ieee.h,v 1.4 2011/11/08 17:06:51 deraadt Exp $ */ +/* $NetBSD: ieee.h,v 1.2 2001/02/21 17:43:50 bjh21 Exp $ */ /* * Copyright (c) 1992, 1993 @@ -21,7 +22,11 @@ * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * @@ -40,130 +45,74 @@ * @(#)ieee.h 8.1 (Berkeley) 6/11/93 */ -/* - * ieee.h defines the machine-dependent layout of the machine's IEEE - * floating point. It does *not* define (yet?) any of the rounding - * mode bits, exceptions, and so forth. - */ +#ifndef _MACHINE_IEEE_H_ +#define _MACHINE_IEEE_H_ -/* - * Define the number of bits in each fraction and exponent. - * - * k k+1 - * Note that 1.0 x 2 == 0.1 x 2 and that denorms are represented - * - * (-exp_bias+1) - * as fractions that look like 0.fffff x 2 . This means that - * - * -126 - * the number 0.10000 x 2 , for instance, is the same as the normalized - * - * -127 -128 - * float 1.0 x 2 . Thus, to represent 2 , we need one leading zero - * - * -129 - * in the fraction; to represent 2 , we need two, and so on. This - * - * (-exp_bias-fracbits+1) - * implies that the smallest denormalized number is 2 - * - * for whichever format we are talking about: for single precision, for - * - * -126 -149 - * instance, we get .00000000000000000000001 x 2 , or 1.0 x 2 , and - * - * -149 == -127 - 23 + 1. - */ -#define SNG_EXPBITS 8 -#define SNG_FRACBITS 23 - -#define DBL_EXPBITS 11 -#define DBL_FRACHBITS 20 -#define DBL_FRACLBITS 32 -#define DBL_FRACBITS 52 - -#define EXT_EXPBITS 15 -#define EXT_FRACHBITS 16 -#define EXT_FRACHMBITS 32 -#define EXT_FRACLMBITS 32 -#define EXT_FRACLBITS 32 -#define EXT_FRACBITS 112 - -#define EXT_IMPLICIT_NBIT - -#define EXT_TO_ARRAY32(p, a) do { \ - (a)[0] = (uint32_t)(p)->ext_fracl; \ - (a)[1] = (uint32_t)(p)->ext_fraclm; \ - (a)[2] = (uint32_t)(p)->ext_frachm; \ - (a)[3] = (uint32_t)(p)->ext_frach; \ -} while(0) +#include <sys/types.h> + +__BEGIN_DECLS + +#define SNG_EXPBITS 8 +#define SNG_FRACBITS 23 + +#define SNG_EXP_INFNAN 255 +#define SNG_EXP_BIAS 127 struct ieee_single { -#ifdef __MIPSEB__ - u_int sng_sign:1; - u_int sng_exp:8; - u_int sng_frac:23; -#else - u_int sng_frac:23; - u_int sng_exp:8; - u_int sng_sign:1; -#endif + unsigned sng_frac:23; + unsigned sng_exp:8; + unsigned sng_sign:1; }; +#define DBL_EXPBITS 11 +#define DBL_FRACHBITS 20 +#define DBL_FRACLBITS 32 +#define DBL_FRACBITS 52 + +#define DBL_EXP_INFNAN 2047 +#define DBL_EXP_BIAS 1023 + struct ieee_double { -#ifdef __MIPSEB__ - u_int dbl_sign:1; - u_int dbl_exp:11; - u_int dbl_frach:20; - u_int dbl_fracl; -#else - u_int dbl_fracl; - u_int dbl_frach:20; - u_int dbl_exp:11; - u_int dbl_sign:1; -#endif + unsigned dbl_fracl; + unsigned dbl_frach:20; + unsigned dbl_exp:11; + unsigned dbl_sign:1; }; +#if __LP64__ + +/* 64-bit Android uses ld128 long doubles. */ + +#define EXT_EXPBITS 15 +#define EXT_FRACHBITS 16 +#define EXT_FRACHMBITS 32 +#define EXT_FRACLMBITS 32 +#define EXT_FRACLBITS 32 +#define EXT_FRACBITS 112 + +#define EXT_EXP_INFNAN 32767 +#define EXT_EXP_BIAS 16383 + +#define EXT_IMPLICIT_NBIT + +#define EXT_TO_ARRAY32(p, a) do { \ + (a)[0] = (uint32_t)(p)->ext_fracl; \ + (a)[1] = (uint32_t)(p)->ext_fraclm; \ + (a)[2] = (uint32_t)(p)->ext_frachm; \ + (a)[3] = (uint32_t)(p)->ext_frach; \ +} while(0) + struct ieee_ext { -#ifdef __MIPSEB__ - u_int ext_sign:1; - u_int ext_exp:15; - u_int ext_frach:16; - u_int ext_frachm; - u_int ext_fraclm; - u_int ext_fracl; -#else - u_int ext_fracl; - u_int ext_fraclm; - u_int ext_frachm; - u_int ext_frach:16; - u_int ext_exp:15; - u_int ext_sign:1; -#endif + unsigned ext_fracl; + unsigned ext_fraclm; + unsigned ext_frachm; + unsigned ext_frach:16; + unsigned ext_exp:15; + unsigned ext_sign:1; }; -/* - * Floats whose exponent is in [1..INFNAN) (of whatever type) are - * `normal'. Floats whose exponent is INFNAN are either Inf or NaN. - * Floats whose exponent is zero are either zero (iff all fraction - * bits are zero) or subnormal values. - * - * A NaN is a `signalling NaN' if its QUIETNAN bit is clear in its - * high fraction; if the bit is set, it is a `quiet NaN'. - */ -#define SNG_EXP_INFNAN 255 -#define DBL_EXP_INFNAN 2047 -#define EXT_EXP_INFNAN 32767 - -#if 0 -#define SNG_QUIETNAN (1 << 22) -#define DBL_QUIETNAN (1 << 19) -#define EXT_QUIETNAN (1 << 15) #endif -/* - * Exponent biases. - */ -#define SNG_EXP_BIAS 127 -#define DBL_EXP_BIAS 1023 -#define EXT_EXP_BIAS 16383 +__END_DECLS + +#endif /* _MACHINE_IEEE_H_ */ |