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Diffstat (limited to 'StdLib/Include/sys/ieee754.h')
| -rw-r--r-- | StdLib/Include/sys/ieee754.h | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/StdLib/Include/sys/ieee754.h b/StdLib/Include/sys/ieee754.h deleted file mode 100644 index 740b58eb55..0000000000 --- a/StdLib/Include/sys/ieee754.h +++ /dev/null @@ -1,152 +0,0 @@ -/* $NetBSD: ieee754.h,v 1.6.24.1 2007/05/07 19:49:10 pavel Exp $ */
-
-/*
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This software was developed by the Computer Systems Engineering group
- * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
- * contributed to Berkeley.
- *
- * 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, Lawrence Berkeley Laboratory.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 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
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ieee.h 8.1 (Berkeley) 6/11/93
- */
-#ifndef _SYS_IEEE754_H_
-#define _SYS_IEEE754_H_
-
-/*
- * NOTICE: This is not a standalone file. To use it, #include it in
- * your port's ieee.h header.
- */
-
-#include <machine/endian.h>
-
-/*
- * <sys/ieee754.h> defines the layout of IEEE 754 floating point types.
- * Only single-precision and double-precision types are defined here;
- * extended types, if available, are defined in the machine-dependent
- * header.
- */
-
-/*
- * 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
-
-struct ieee_single {
-#if _BYTE_ORDER == _BIG_ENDIAN
- u_int sng_sign:1;
- u_int sng_exp:SNG_EXPBITS;
- u_int sng_frac:SNG_FRACBITS;
-#else
- u_int sng_frac:SNG_FRACBITS;
- u_int sng_exp:SNG_EXPBITS;
- u_int sng_sign:1;
-#endif
-};
-
-#define DBL_EXPBITS 11
-#define DBL_FRACHBITS 20
-#define DBL_FRACLBITS 32
-#define DBL_FRACBITS (DBL_FRACHBITS + DBL_FRACLBITS)
-
-struct ieee_double {
-#if _BYTE_ORDER == _BIG_ENDIAN
- u_int dbl_sign:1;
- u_int dbl_exp:DBL_EXPBITS;
- u_int dbl_frach:DBL_FRACHBITS;
- u_int dbl_fracl:DBL_FRACLBITS;
-#else
- u_int dbl_fracl:DBL_FRACLBITS;
- u_int dbl_frach:DBL_FRACHBITS;
- u_int dbl_exp:DBL_EXPBITS;
- u_int dbl_sign:1;
-#endif
-};
-
-/*
- * 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.
- *
- * At least one `signalling NaN' and one `quiet NaN' value must be
- * implemented. It is left to the architecture to specify how to
- * distinguish between these.
- */
-#define SNG_EXP_INFNAN 255
-#define DBL_EXP_INFNAN 2047
-
-/*
- * Exponent biases.
- */
-#define SNG_EXP_BIAS 127
-#define DBL_EXP_BIAS 1023
-
-/*
- * Convenience data structures.
- */
-union ieee_single_u {
- float sngu_f;
- struct ieee_single sngu_sng;
-};
-
-union ieee_double_u {
- double dblu_d;
- struct ieee_double dblu_dbl;
-};
-#endif /* _SYS_IEEE754_H_ */
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