The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/include/float.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1989 Regents of the University of California.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      from: @(#)float.h       7.1 (Berkeley) 5/8/90
   32  * $FreeBSD$
   33  */
   34 
   35 #ifndef _MACHINE_FLOAT_H_
   36 #define _MACHINE_FLOAT_H_ 1
   37 
   38 #include <sys/cdefs.h>
   39 
   40 __BEGIN_DECLS
   41 extern int __flt_rounds(void);
   42 __END_DECLS
   43 
   44 #define FLT_RADIX       2               /* b */
   45 #ifndef _ARM_HARD_FLOAT
   46 #define FLT_ROUNDS      __flt_rounds()
   47 #else
   48 #define FLT_ROUNDS      (-1)
   49 #endif
   50 #if __ISO_C_VISIBLE >= 1999
   51 #define FLT_EVAL_METHOD 0
   52 #define DECIMAL_DIG     17              /* max precision in decimal digits */
   53 #endif
   54 
   55 #define FLT_MANT_DIG    24              /* p */
   56 #define FLT_EPSILON     1.19209290E-07F /* b**(1-p) */
   57 #define FLT_DIG         6               /* floor((p-1)*log10(b))+(b == 10) */
   58 #define FLT_MIN_EXP     (-125)          /* emin */
   59 #define FLT_MIN         1.17549435E-38F /* b**(emin-1) */
   60 #define FLT_MIN_10_EXP  (-37)           /* ceil(log10(b**(emin-1))) */
   61 #define FLT_MAX_EXP     128             /* emax */
   62 #define FLT_MAX         3.40282347E+38F /* (1-b**(-p))*b**emax */
   63 #define FLT_MAX_10_EXP  38              /* floor(log10((1-b**(-p))*b**emax)) */
   64 #if __ISO_C_VISIBLE >= 2011
   65 #define FLT_TRUE_MIN    1.40129846E-45F /* b**(emin-p) */
   66 #define FLT_DECIMAL_DIG 9               /* ceil(1+p*log10(b)) */
   67 #define FLT_HAS_SUBNORM 1
   68 #endif /* __ISO_C_VISIBLE >= 2011 */
   69 
   70 #define DBL_MANT_DIG    53
   71 #define DBL_EPSILON     2.2204460492503131E-16
   72 #define DBL_DIG         15
   73 #define DBL_MIN_EXP     (-1021)
   74 #define DBL_MIN         2.2250738585072014E-308
   75 #define DBL_MIN_10_EXP  (-307)
   76 #define DBL_MAX_EXP     1024
   77 #define DBL_MAX         1.7976931348623157E+308
   78 #define DBL_MAX_10_EXP  308
   79 #if __ISO_C_VISIBLE >= 2011
   80 #define DBL_TRUE_MIN    4.9406564584124654E-324
   81 #define DBL_DECIMAL_DIG 17
   82 #define DBL_HAS_SUBNORM 1
   83 #endif /* __ISO_C_VISIBLE >= 2011 */
   84 
   85 #define LDBL_MANT_DIG   DBL_MANT_DIG
   86 #define LDBL_EPSILON    ((long double)DBL_EPSILON)
   87 #define LDBL_DIG        DBL_DIG
   88 #define LDBL_MIN_EXP    DBL_MIN_EXP
   89 #define LDBL_MIN        ((long double)DBL_MIN)
   90 #define LDBL_MIN_10_EXP DBL_MIN_10_EXP
   91 #define LDBL_MAX_EXP    DBL_MAX_EXP
   92 #define LDBL_MAX        ((long double)DBL_MAX)
   93 #define LDBL_MAX_10_EXP DBL_MAX_10_EXP
   94 #if __ISO_C_VISIBLE >= 2011
   95 #define LDBL_TRUE_MIN   ((long double)DBL_TRUE_MIN)
   96 #define LDBL_DECIMAL_DIG DBL_DECIMAL_DIG
   97 #define LDBL_HAS_SUBNORM DBL_HAS_SUBNORM
   98 #endif /* __ISO_C_VISIBLE >= 2011 */
   99 
  100 #endif /* _MACHINE_FLOAT_H_ */

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