iswblank(3c)

1iswalpha(3C)             Standard C Library Functions             iswalpha(3C)
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NAME

6       iswalpha,  isenglish,  isideogram,  isnumber,  isphonogram,  isspecial,
7       iswalnum, iswascii, iswblank, iswcntrl, iswdigit,  iswgraph,  iswlower,
8       iswprint, iswpunct, iswspace, iswupper, iswxdigit - wide-character code
9       classification functions
10

SYNOPSIS

12       #include <wchar.h>
13       #include <wctype.h>
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15       int iswalpha(wint_t wc);
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17
18       int isenglish(wint_t wc);
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20
21       int isideogram(wint_t wc);
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23
24       int isnumber(wint_t wc);
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26
27       int isphonogram(wint_t wc);
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29
30       int isspecial(wint_t wc);
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32
33       int iswalnum(wint_t wc);
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35
36       int iswascii(wint_t wc);
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38
39       int iswblank(wint_t wc);
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41
42       int iswcntrl(wint_t wc);
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44
45       int iswdigit(wint_t wc);
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47
48       int iswgraph(wint_t wc);
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50
51       int iswlower(wint_t wc);
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53
54       int iswprint(wint_t wc);
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56
57       int iswpunct(wint_t wc);
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59
60       int iswspace(wint_t wc);
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62
63       int iswupper(wint_t wc);
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65
66       int iswxdigit(wint_t wc);
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68

DESCRIPTION

70       These functions test whether wc is a wide-character code representing a
71       character of a particular class defined in the LC_CTYPE category of the
72       current locale.
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74
75       In all cases, wc is a wint_t, the value of which must be a wide-charac‐
76       ter  code  corresponding  to a valid character in the current locale or
77       must equal the value of the macro WEOF. If the argument has  any  other
78       values, the behavior is undefined.
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80       iswalpha(wc)       Tests whether wc is a wide-character code represent‐
81                          ing a character of class "alpha"  in  the  program's
82                          current locale.
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84
85       isenglish(wc)      Tests whether wc is a wide-character code represent‐
86                          ing an English language character,  excluding  ASCII
87                          characters.
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89
90       isideogram(wc)     Tests whether wc is a wide-character code represent‐
91                          ing an  ideographic  language  character,  excluding
92                          ASCII characters.
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94
95       isnumber(wc)       Tests whether wc is a wide-character code represent‐
96                          ing digit [0−9], excluding ASCII characters.
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98
99       isphonogram(wc)    Tests whether wc is a wide-character code represent‐
100                          ing  a  phonetic language character, excluding ASCII
101                          characters.
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103
104       isspecial(wc)      Tests whether wc is a wide-character code represent‐
105                          ing  a  special  language character, excluding ASCII
106                          characters.
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108
109       iswalnum(wc)       Tests whether wc is a wide-character code represent‐
110                          ing  a  character of class "alpha" or "digit" in the
111                          program's current locale.
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113
114       iswascii(wc)       Tests whether wc is a wide-character code represent‐
115                          ing an ASCII character.
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117
118       iswblank(wc)       Tests whether wc is a wide-character code represent‐
119                          ing a character of class "blank"  in  the  program's
120                          current  locale.  This  function is not available to
121                          applications conforming to standards prior to SUSv3.
122                          See standards(5).
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124
125       iswlower(wc)       Tests whether wc is a wide-character code represent‐
126                          ing a character of class "lower"  in  the  program's
127                          current locale.
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129
130       iswcntrl(wc)       Tests whether wc is a wide-character code represent‐
131                          ing a character of class "cntrl"  in  the  program's
132                          current locale.
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134
135       iswdigit(wc)       Tests whether wc is a wide-character code represent‐
136                          ing a character of class "digit"  in  the  program's
137                          current locale.
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139
140       iswgraph(wc)       Tests whether wc is a wide-character code represent‐
141                          ing a character of class "graph"  in  the  program's
142                          current locale.
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144
145       iswprint(wc)       Tests whether wc is a wide-character code represent‐
146                          ing a character of class "print"  in  the  program's
147                          current locale.
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149
150       iswpunct(wc)       Tests whether wc is a wide-character code represent‐
151                          ing a character of class "punct"  in  the  program's
152                          current locale.
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154
155       iswspace(wc)       Tests whether wc is a wide-character code represent‐
156                          ing a character of class "space"  in  the  program's
157                          current locale.
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159
160       iswupper(wc)       Tests whether wc is a wide-character code represent‐
161                          ing a character of class "upper"  in  the  program's
162                          current locale.
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164
165       iswxdigit(wc)      Tests whether wc is a wide-character code represent‐
166                          ing a character of class "xdigit" in  the  program's
167                          current locale.
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169

ATTRIBUTES

171       See attributes(5) for descriptions of the following attributes:
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176       ┌─────────────────────────────┬─────────────────────────────┐
177       │ATTRIBUTE TYPE               │ATTRIBUTE VALUE              │
178       ├─────────────────────────────┼─────────────────────────────┤
179       │CSI                          │Enabled                      │
180       ├─────────────────────────────┼─────────────────────────────┤
181       │Interface Stability          │See  below.                  │
182       ├─────────────────────────────┼─────────────────────────────┤
183       │MT-Level                     │MT-Safe with exceptions      │
184       └─────────────────────────────┴─────────────────────────────┘
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186
187       The  iswalpha(),  iswalnum(),  iswblank(), iswcntrl(), iswdigit(), isw‐
188       graph(), iswlower(), iswprint(),  iswpunct(),  iswspace(),  iswupper(),
189       and iswxdigit() functions are Standard.
190

NAME

SYNOPSIS

DESCRIPTION

ATTRIBUTES

SEE ALSO