usr/src/head/float.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1988 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 /*
  27  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30
  31 #ifndef _FLOAT_H
  32 #define _FLOAT_H
  33
  34 #pragma ident   "%Z%%M% %I%     %E% SMI"
  35
  36 #include <sys/feature_tests.h>
  37
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 #if defined(__sparc)
  43
  44 #if defined(__STDC__)
  45 extern int __flt_rounds(void);
  46 #else   /* defined(__STDC__) */
  47 extern int __flt_rounds();
  48 #endif  /* defined(__STDC__) */
  49 #define FLT_ROUNDS      __flt_rounds()
  50
  51 #else /* defined(__sparc) */
  52
  53 #if defined(__STDC__)
  54 extern int __fltrounds(void);
  55 #else   /* defined (__STDC__) */
  56 extern int __fltrounds();
  57 #endif  /* defined(__STDC__) */
  58 #if defined(__amd64)
  59 #define FLT_ROUNDS      __fltrounds()
  60 #else   /* defined(__amd64) */
  61 extern int __flt_rounds;
  62 #define FLT_ROUNDS      __flt_rounds
  63 #endif  /* defined(__amd64) */
  64 #endif /* defined(__sparc) */
  65
  66 /* Introduced in ISO/IEC 9899:1999 standard */
  67 #if defined(__EXTENSIONS__) || defined(_STDC_C99) || \
  68         (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX))
  69 #if defined(__FLT_EVAL_METHOD__)
  70 #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
  71 #else
  72 #define FLT_EVAL_METHOD -1
  73 #endif /* defined(__FLT_EVAL_METHOD__) */
  74 #endif /* defined(__EXTENSIONS__) || defined(_STDC_C99)... */
  75
  76 #define FLT_RADIX       2
  77 #define FLT_MANT_DIG    24
  78 #define FLT_EPSILON     1.1920928955078125000000E-07F
  79 #define FLT_DIG         6
  80 #define FLT_MIN_EXP     (-125)
  81 #define FLT_MIN         1.1754943508222875079688E-38F
  82 #define FLT_MIN_10_EXP  (-37)
  83 #define FLT_MAX_EXP     (+128)
  84 #define FLT_MAX         3.4028234663852885981170E+38F
  85 #define FLT_MAX_10_EXP  (+38)
  86
  87 #define DBL_MANT_DIG    53
  88 #define DBL_EPSILON     2.2204460492503130808473E-16
  89 #define DBL_DIG         15
  90 #define DBL_MIN_EXP     (-1021)
  91 #define DBL_MIN         2.2250738585072013830903E-308
  92 #define DBL_MIN_10_EXP  (-307)
  93 #define DBL_MAX_EXP     (+1024)
  94 #define DBL_MAX         1.7976931348623157081452E+308
  95 #define DBL_MAX_10_EXP  (+308)
  96
  97 /* Introduced in ISO/IEC 9899:1999 standard */
  98 #if defined(__EXTENSIONS__) || defined(_STDC_C99) || \
  99         (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX))
 100 #if defined(__sparc)
 101 #define DECIMAL_DIG     36
 102 #elif defined(__i386) || defined(__amd64)
 103 #define DECIMAL_DIG     21
 104 #endif
 105 #endif /* defined(__EXTENSIONS__) || defined(_STDC_C99)... */
 106
 107
 108 #if defined(__i386) || defined(__amd64)
 109
 110 /* Follows IEEE standards for 80-bit floating point */
 111 #define LDBL_MANT_DIG   64
 112 #define LDBL_EPSILON    1.0842021724855044340075E-19L
 113 #define LDBL_DIG        18
 114 #define LDBL_MIN_EXP    (-16381)
 115 #define LDBL_MIN        3.3621031431120935062627E-4932L
 116 #define LDBL_MIN_10_EXP (-4931)
 117 #define LDBL_MAX_EXP    (+16384)
 118 #define LDBL_MAX        1.1897314953572317650213E+4932L
 119 #define LDBL_MAX_10_EXP (+4932)
 120
 121 #elif defined(__sparc)
 122
 123 /* Follows IEEE standards for 128-bit floating point */
 124 #define LDBL_MANT_DIG   113
 125 #define LDBL_EPSILON    1.925929944387235853055977942584927319E-34L
 126 #define LDBL_DIG        33
 127 #define LDBL_MIN_EXP    (-16381)
 128 #define LDBL_MIN        3.362103143112093506262677817321752603E-4932L
 129 #define LDBL_MIN_10_EXP (-4931)
 130 #define LDBL_MAX_EXP    (+16384)
 131 #define LDBL_MAX        1.189731495357231765085759326628007016E+4932L
 132 #define LDBL_MAX_10_EXP (+4932)
 133
 134 #else
 135
 136 #error "Unknown architecture!"
 137
 138 #endif
 139
 140
 141 #ifdef  __cplusplus
 142 }
 143 #endif
 144
 145 #endif  /* _FLOAT_H */