1 /***
2 *lconv.c - Contains the localeconv function
3 *
4 * Copyright (c) Microsoft Corporation. All rights reserved.
5 *
6 *Purpose:
7 * Contains the localeconv() function.
8 *
9 *******************************************************************************/
10 #include <corecrt_internal.h>
11 #include <limits.h>
12 #include <locale.h>
13
14
15
16 /* pointer to original static to avoid freeing */
17 extern "C" { char __acrt_lconv_static_decimal []{"."}; }
18 extern "C" { char __acrt_lconv_static_null []{""}; }
19 extern "C" { wchar_t __acrt_lconv_static_W_decimal[]{L"."}; }
20 extern "C" { wchar_t __acrt_lconv_static_W_null []{L""}; }
21
22 /* lconv settings for "C" locale */
23 extern "C" { struct lconv __acrt_lconv_c
24 {
25 __acrt_lconv_static_decimal, // decimal_point
26 __acrt_lconv_static_null, // thousands_sep
27 __acrt_lconv_static_null, // grouping
28 __acrt_lconv_static_null, // int_curr_symbol
29 __acrt_lconv_static_null, // currency_symbol
30 __acrt_lconv_static_null, // mon_decimal_point
31 __acrt_lconv_static_null, // mon_thousands_sep
32 __acrt_lconv_static_null, // mon_grouping
33 __acrt_lconv_static_null, // positive_sign
34 __acrt_lconv_static_null, // negative_sign
35 CHAR_MAX, // int_frac_digits
36 CHAR_MAX, // frac_digits
37 CHAR_MAX, // p_cs_precedes
38 CHAR_MAX, // p_sep_by_space
39 CHAR_MAX, // n_cs_precedes
40 CHAR_MAX, // n_sep_by_space
41 CHAR_MAX, // p_sign_posn
42 CHAR_MAX, // n_sign_posn
43 __acrt_lconv_static_W_decimal, // _W_decimal_point
44 __acrt_lconv_static_W_null, // _W_thousands_sep
45 __acrt_lconv_static_W_null, // _W_int_curr_symbol
46 __acrt_lconv_static_W_null, // _W_currency_symbol
47 __acrt_lconv_static_W_null, // _W_mon_decimal_point
48 __acrt_lconv_static_W_null, // _W_mon_thousands_sep
49 __acrt_lconv_static_W_null, // _W_positive_sign
50 __acrt_lconv_static_W_null, // _W_negative_sign
51 }; }
52
53
54 /* pointer to current lconv structure */
55
56 extern "C" { struct lconv* __acrt_lconv{&__acrt_lconv_c}; }
57
58 /***
59 *struct lconv *localeconv(void) - Return the numeric formatting convention
60 *
61 *Purpose:
62 * The localeconv() routine returns the numeric formatting conventions
63 * for the current locale setting. [ANSI]
64 *
65 *Entry:
66 * void
67 *
68 *Exit:
69 * struct lconv * = pointer to struct indicating current numeric
70 * formatting conventions.
71 *
72 *Exceptions:
73 *
74 *******************************************************************************/
75
localeconv()76 extern "C" lconv* __cdecl localeconv()
77 {
78 // Note that we don't need _LocaleUpdate in this function. The main reason
79 // being, that this is a leaf function in locale usage terms.
80 __acrt_ptd* const ptd = __acrt_getptd();
81 __crt_locale_data* locale_info = ptd->_locale_info;
82
83 __acrt_update_locale_info(ptd, &locale_info);
84
85 return locale_info->lconv;
86 }
87