xref: /titanic_41/usr/src/lib/libc/inc/xpg6.h (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
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 */
167