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/mips/include/float.h

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    1 /*-
    2  * Copyright (c) 1989 Regents of the University of California.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      from: @(#)float.h       7.1 (Berkeley) 5/8/90
   30  *      from: src/sys/i386/include/float.h,v 1.8 1999/08/28 00:44:11 peter
   31  *      JNPR: float.h,v 1.4 2006/12/02 09:53:41 katta
   32  * $FreeBSD: releng/9.0/sys/mips/include/float.h 202175 2010-01-12 21:36:08Z imp $
   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 #ifdef CPU_HAVEFPU
   46 #define FLT_ROUNDS      __flt_rounds() /* FP addition rounds to nearest */
   47 #else
   48 #define FLT_ROUNDS      -1
   49 #endif
   50 /*
   51  * XXXMIPS: MIPS32 has both float and double type, so set FLT_EVAL_METHOD
   52  *   to 0. Check it for 64-bits systems.
   53  */
   54 #define FLT_EVAL_METHOD 0
   55 #define DECIMAL_DIG     17
   56 
   57 #define FLT_MANT_DIG    24              /* p */
   58 #define FLT_EPSILON     1.19209290E-07F /* b**(1-p) */
   59 #define FLT_DIG         6               /* floor((p-1)*log10(b))+(b == 10) */
   60 #define FLT_MIN_EXP     (-125)          /* emin */
   61 #define FLT_MIN         1.17549435E-38F /* b**(emin-1) */
   62 #define FLT_MIN_10_EXP  (-37)           /* ceil(log10(b**(emin-1))) */
   63 #define FLT_MAX_EXP     128             /* emax */
   64 #define FLT_MAX         3.40282347E+38F /* (1-b**(-p))*b**emax */
   65 #define FLT_MAX_10_EXP  38              /* floor(log10((1-b**(-p))*b**emax)) */
   66 
   67 #define DBL_MANT_DIG    53
   68 #define DBL_EPSILON     2.2204460492503131E-16
   69 #define DBL_DIG         15
   70 #define DBL_MIN_EXP     (-1021)
   71 #define DBL_MIN         2.2250738585072014E-308
   72 #define DBL_MIN_10_EXP  (-307)
   73 #define DBL_MAX_EXP     1024
   74 #define DBL_MAX         1.7976931348623157E+308
   75 #define DBL_MAX_10_EXP  308
   76 
   77 #define LDBL_MANT_DIG   DBL_MANT_DIG
   78 #define LDBL_EPSILON    DBL_EPSILON
   79 #define LDBL_DIG        DBL_DIG
   80 #define LDBL_MIN_EXP    DBL_MIN_EXP
   81 #define LDBL_MIN        DBL_MIN
   82 #define LDBL_MIN_10_EXP DBL_MIN_10_EXP
   83 #define LDBL_MAX_EXP    DBL_MAX_EXP
   84 #define LDBL_MAX        DBL_MAX
   85 #define LDBL_MAX_10_EXP DBL_MAX_10_EXP
   86 
   87 #endif /* _MACHINE_FLOAT_H_ */

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