usr/src/lib/libc/inc/xpg6.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 /*
  23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _XPG6_H
  28 #define _XPG6_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 /*
  33  * This is an OS/Net Consolidation PRIVATE header.
  34  */
  35
  36 /*
  37  * __xpg6 (C99/SUSv3) was first introduced in Solaris 10.
  38  *
  39  * C99/SUSv3 behavior control bits for __xpg6 variable defined
  40  * in port/gen/xpg6.c.
  41  * Use these with extreme care.
  42  *
  43  * Please follow these basic rules for using these bits and
  44  * don't convolute their meaning.
  45  *
  46  * The basic idea here is the upper 16 bits (default_off)
  47  * enable/disable existing Solaris behaviors that conflict with
  48  * the C99 or SUSv3 standards.  When these bits are on you
  49  * are restoring an existing Solaris behavior and no longer
  50  * in strict C99/SUSv3 conformance mode.
  51  *
  52  * The lower 16 bits (default_on) are C99/SUSv3 behaviors
  53  * which are strictly conforming behaviors as far as the
  54  * C99/SUSv3 standards are concerned.  When these bits are on
  55  * you are in C99/SUSv3 conforming mode.  When these bits are off
  56  * you have turned off C99/SUSv3 conforming mode and are using
  57  * previous Solaris behavior.
  58  *
  59  * _C99SUSv3_mode_ON and _C99SUSv3_mode_OFF are two meta-definitions
  60  * which are the most likely modes to run Solaris in.
  61  * However, this frame work allows for other possible behaviors.
  62  *
  63  * The default mode of libc is _C99SUSv3_mode_OFF.
  64  * A C99/SUSv3 conforming application should be compiled
  65  * with the XPG6 standards conforming C compiler utility (c99) which
  66  * adds an object file that contains an alternate definition
  67  * for __xpg6 (_C99SUSv3_mode_ON) thus enabling C99/SUSv3 standards
  68  * conforming mode.
  69  */
  70
  71 #define _C99SUSv3_default_off_reserved15        0x80000000
  72 #define _C99SUSv3_default_off_reserved14        0x40000000
  73 #define _C99SUSv3_default_off_reserved13        0x20000000
  74 #define _C99SUSv3_default_off_reserved12        0x10000000
  75 #define _C99SUSv3_default_off_reserved11        0x08000000
  76 #define _C99SUSv3_default_off_reserved10        0x04000000
  77 #define _C99SUSv3_default_off_reserved09        0x02000000
  78 #define _C99SUSv3_default_off_reserved08        0x01000000
  79 #define _C99SUSv3_default_off_reserved07        0x00800000
  80 #define _C99SUSv3_default_off_reserved06        0x00400000
  81 #define _C99SUSv3_default_off_reserved05        0x00200000
  82 #define _C99SUSv3_default_off_reserved04        0x00100000
  83 #define _C99SUSv3_default_off_reserved03        0x00080000
  84 #define _C99SUSv3_default_off_reserved02        0x00040000
  85 #define _C99SUSv3_default_off_reserved01        0x00020000
  86 /*
  87  * If set then %f & %F print Inf/NaN;
  88  *        else print inf/nan & INF/NAN, respectively.
  89  */
  90 #define _C99SUSv3_mixed_case_Inf_and_NaN        0x00010000
  91
  92 #define _C99SUSv3_default_on_reserved15         0x00008000
  93 #define _C99SUSv3_default_on_reserved14         0x00004000
  94 #define _C99SUSv3_default_on_reserved13         0x00002000
  95 #define _C99SUSv3_default_on_reserved12         0x00001000
  96 #define _C99SUSv3_default_on_reserved11         0x00000800
  97 /*
  98  * If set, math library entry points present in SUSv2 deal with exceptional
  99  * cases as per SUSv3 spec where math_errhandling is set to MATH_ERREXCEPT;
 100  * otherwise they behave as per SUSv2 spec.
 101  */
 102 #define _C99SUSv3_math_errexcept                0x00000400
 103 /*
 104  * If set, when filename is a null pointer, freopen(NULL, mode, ...) will
 105  * attempt to change the mode of the stream to that specified by mode, as if
 106  * the name of the file currently associated with the stream had been used;
 107  * otherwise freopen(NULL, ...) will fail.
 108  */
 109 #define _C99SUSv3_freopen_NULL_filename         0x00000200
 110 /*
 111  * If set,
 112  *      - strfmon() uses int_* members for %i
 113  *      - strfmon() handles the case n_sep_by_space == 2 as SUSv3 expects,
 114  *      which is different from it does in non SUSv3 mode.
 115  */
 116 #define _C99SUSv3_strfmon                       0x00000100
 117 /*
 118  * If set, pow(+/-1,+/-Inf) & pow(1,NaN) return 1; otherwise NaN is returned.
 119  * Analogous comment applies to powf and powl.
 120  */
 121 #define _C99SUSv3_pow_treats_Inf_as_an_even_int 0x00000080
 122 /*
 123  * If set, logb(subnormal) returns (double) ilogb(subnormal); otherwise
 124  * logb(subnormal) returns logb(DBL_MIN).  Analogous comment applies to
 125  * logbf and logbl.
 126  */
 127 #define _C99SUSv3_logb_subnormal_is_like_ilogb  0x00000040
 128 /*
 129  * If set, ilogb(0/+Inf/-Inf/NaN) raises FE_INVALID as per SUSv3; otherwise
 130  * no exception is raised.  Analogous comment applies to ilogbf and ilogbl.
 131  */
 132 #define _C99SUSv3_ilogb_0InfNaN_raises_invalid  0x00000020
 133 /*
 134  * If set, the range for strptime() and getdate() %S specifier is [0-60]
 135  * seconds; otherwise the range is [0-61] seconds.
 136  */
 137 #define _C99SUSv3_strptime_seconds              0x00000010
 138
 139 #define _C99SUSv3_default_on_reserved03         0x00000008
 140
 141 /*
 142  * Use SUSv3 version numbers for _SC_VERSION and _SC_XOPEN_XCU_VERSION.
 143  */
 144 #define _C99SUSv3_XPG6_sysconf_version          0x00000004
 145 /*
 146  * Include /usr/xpg6/bin in PATH.
 147  */
 148 #define _C99SUSv3_XPG6_pathing                  0x00000002
 149 /*
 150  * If set strtod() and wcstod() recognize hex floating point constants.
 151  */
 152 #define _C99SUSv3_recognize_hexfp               0x00000001
 153
 154 /*
 155  * __xpg6 = _C99SUSv3_mode_ON   enables C99/SUSv3 standards conformance mode.
 156  * __xpg6 = _C99SUSv3_mode_OFF disables C99/SUSv3 standards conformance mode.
 157  */
 158
 159 #define _C99SUSv3_mode_ON       0x0000FFFF
 160 #define _C99SUSv3_mode_OFF      0xFFFF0000
 161
 162 #if !defined(_ASM)
 163 extern unsigned int __xpg6;
 164 #endif
 165
 166 #endif /* _XPG6_H */