gbdk-2020 | GameBoy Development Kit |
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docs/api/ctype_8h.html
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43 <div id="projectname">GBDK 2020 Docs
44  <span id="projectnumber">4.5.0</span>
45 </div>
46 <div id="projectbrief">API Documentation for GBDK 2020</div>
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100
101 <div class="header">
102 <div class="summary">
103 <a href="#func-members">Functions</a> </div>
104 <div class="headertitle"><div class="title">ctype.h File Reference</div></div>
105 </div><!--header-->
106 <div class="contents">
107 <div class="textblock"><code>#include <<a class="el" href="types_8h_source.html">types.h</a>></code><br />
108 <code>#include <<a class="el" href="stdbool_8h_source.html">stdbool.h</a>></code><br />
109 </div>
110 <p><a href="ctype_8h_source.html">Go to the source code of this file.</a></p>
111 <table class="memberdecls">
112 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
113 Functions</h2></td></tr>
114 <tr class="memitem:isalpha"><td class="memItemLeft" align="right" valign="top"><a class="el" href="stdbool_8h.html#bool">bool</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="ctype_8h.html#isalpha">isalpha</a> (char <a class="el" href="sms_8h.html#c">c</a>)</td></tr>
115 <tr class="separator:isalpha"><td class="memSeparator" colspan="2"> </td></tr>
116 <tr class="memitem:isupper"><td class="memItemLeft" align="right" valign="top"><a class="el" href="stdbool_8h.html#bool">bool</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="ctype_8h.html#isupper">isupper</a> (char <a class="el" href="sms_8h.html#c">c</a>)</td></tr>
117 <tr class="separator:isupper"><td class="memSeparator" colspan="2"> </td></tr>
118 <tr class="memitem:islower"><td class="memItemLeft" align="right" valign="top"><a class="el" href="stdbool_8h.html#bool">bool</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="ctype_8h.html#islower">islower</a> (char <a class="el" href="sms_8h.html#c">c</a>)</td></tr>
119 <tr class="separator:islower"><td class="memSeparator" colspan="2"> </td></tr>
120 <tr class="memitem:isdigit"><td class="memItemLeft" align="right" valign="top"><a class="el" href="stdbool_8h.html#bool">bool</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="ctype_8h.html#isdigit">isdigit</a> (char <a class="el" href="sms_8h.html#c">c</a>)</td></tr>
121 <tr class="separator:isdigit"><td class="memSeparator" colspan="2"> </td></tr>
122 <tr class="memitem:isspace"><td class="memItemLeft" align="right" valign="top"><a class="el" href="stdbool_8h.html#bool">bool</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="ctype_8h.html#isspace">isspace</a> (char <a class="el" href="sms_8h.html#c">c</a>)</td></tr>
123 <tr class="separator:isspace"><td class="memSeparator" colspan="2"> </td></tr>
124 <tr class="memitem:toupper"><td class="memItemLeft" align="right" valign="top">char </td><td class="memItemRight" valign="bottom"><a class="el" href="ctype_8h.html#toupper">toupper</a> (char <a class="el" href="sms_8h.html#c">c</a>)</td></tr>
125 <tr class="separator:toupper"><td class="memSeparator" colspan="2"> </td></tr>
126 <tr class="memitem:tolower"><td class="memItemLeft" align="right" valign="top">char </td><td class="memItemRight" valign="bottom"><a class="el" href="ctype_8h.html#tolower">tolower</a> (char <a class="el" href="sms_8h.html#c">c</a>)</td></tr>
127 <tr class="separator:tolower"><td class="memSeparator" colspan="2"> </td></tr>
128 </table>
129 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
130 <div class="textblock"><p >Character type functions. </p>
131 </div><h2 class="groupheader">Function Documentation</h2>
132 <a id="isalpha" name="isalpha"></a>
133 <h2 class="memtitle"><span class="permalink"><a href="#isalpha">◆ </a></span>isalpha()</h2>
134
135 <div class="memitem">
136 <div class="memproto">
137 <table class="memname">
138 <tr>
139 <td class="memname"><a class="el" href="stdbool_8h.html#bool">bool</a> isalpha </td>
140 <td>(</td>
141 <td class="paramtype">char </td>
142 <td class="paramname"><em>c</em></td><td>)</td>
143 <td></td>
144 </tr>
145 </table>
146 </div><div class="memdoc">
147 <p >Returns TRUE if the character <b>c</b> is a letter (a-z, A-Z), otherwise FALSE </p><dl class="params"><dt>Parameters</dt><dd>
148 <table class="params">
149 <tr><td class="paramname">c</td><td>Character to test </td></tr>
150 </table>
151 </dd>
152 </dl>
153
154 </div>
155 </div>
156 <a id="isupper" name="isupper"></a>
157 <h2 class="memtitle"><span class="permalink"><a href="#isupper">◆ </a></span>isupper()</h2>
158
159 <div class="memitem">
160 <div class="memproto">
161 <table class="memname">
162 <tr>
163 <td class="memname"><a class="el" href="stdbool_8h.html#bool">bool</a> isupper </td>
164 <td>(</td>
165 <td class="paramtype">char </td>
166 <td class="paramname"><em>c</em></td><td>)</td>
167 <td></td>
168 </tr>
169 </table>
170 </div><div class="memdoc">
171 <p >Returns TRUE if the character <b>c</b> is an uppercase letter (A-Z), otherwise FALSE </p><dl class="params"><dt>Parameters</dt><dd>
172 <table class="params">
173 <tr><td class="paramname">c</td><td>Character to test </td></tr>
174 </table>
175 </dd>
176 </dl>
177
178 </div>
179 </div>
180 <a id="islower" name="islower"></a>
181 <h2 class="memtitle"><span class="permalink"><a href="#islower">◆ </a></span>islower()</h2>
182
183 <div class="memitem">
184 <div class="memproto">
185 <table class="memname">
186 <tr>
187 <td class="memname"><a class="el" href="stdbool_8h.html#bool">bool</a> islower </td>
188 <td>(</td>
189 <td class="paramtype">char </td>
190 <td class="paramname"><em>c</em></td><td>)</td>
191 <td></td>
192 </tr>
193 </table>
194 </div><div class="memdoc">
195 <p >Returns TRUE if the character <b>c</b> is a lowercase letter (a-z), otherwise FALSE </p><dl class="params"><dt>Parameters</dt><dd>
196 <table class="params">
197 <tr><td class="paramname">c</td><td>Character to test </td></tr>
198 </table>
199 </dd>
200 </dl>
201
202 </div>
203 </div>
204 <a id="isdigit" name="isdigit"></a>
205 <h2 class="memtitle"><span class="permalink"><a href="#isdigit">◆ </a></span>isdigit()</h2>
206
207 <div class="memitem">
208 <div class="memproto">
209 <table class="memname">
210 <tr>
211 <td class="memname"><a class="el" href="stdbool_8h.html#bool">bool</a> isdigit </td>
212 <td>(</td>
213 <td class="paramtype">char </td>
214 <td class="paramname"><em>c</em></td><td>)</td>
215 <td></td>
216 </tr>
217 </table>
218 </div><div class="memdoc">
219 <p >Returns TRUE if the character <b>c</b> is a digit (0-9), otherwise FALSE </p><dl class="params"><dt>Parameters</dt><dd>
220 <table class="params">
221 <tr><td class="paramname">c</td><td>Character to test </td></tr>
222 </table>
223 </dd>
224 </dl>
225
226 </div>
227 </div>
228 <a id="isspace" name="isspace"></a>
229 <h2 class="memtitle"><span class="permalink"><a href="#isspace">◆ </a></span>isspace()</h2>
230
231 <div class="memitem">
232 <div class="memproto">
233 <table class="memname">
234 <tr>
235 <td class="memname"><a class="el" href="stdbool_8h.html#bool">bool</a> isspace </td>
236 <td>(</td>
237 <td class="paramtype">char </td>
238 <td class="paramname"><em>c</em></td><td>)</td>
239 <td></td>
240 </tr>
241 </table>
242 </div><div class="memdoc">
243 <p >Returns TRUE if the character <b>c</b> is a space (' '), tab (\t), or newline (\n) character, otherwise FALSE </p><dl class="params"><dt>Parameters</dt><dd>
244 <table class="params">
245 <tr><td class="paramname">c</td><td>Character to test </td></tr>
246 </table>
247 </dd>
248 </dl>
249
250 </div>
251 </div>
252 <a id="toupper" name="toupper"></a>
253 <h2 class="memtitle"><span class="permalink"><a href="#toupper">◆ </a></span>toupper()</h2>
254
255 <div class="memitem">
256 <div class="memproto">
257 <table class="memname">
258 <tr>
259 <td class="memname">char toupper </td>
260 <td>(</td>
261 <td class="paramtype">char </td>
262 <td class="paramname"><em>c</em></td><td>)</td>
263 <td></td>
264 </tr>
265 </table>
266 </div><div class="memdoc">
267 <p >Returns uppercase version of character <b>c</b> if it is a letter (a-z), otherwise it returns the input value unchanged. </p><dl class="params"><dt>Parameters</dt><dd>
268 <table class="params">
269 <tr><td class="paramname">c</td><td>Character to test </td></tr>
270 </table>
271 </dd>
272 </dl>
273
274 </div>
275 </div>
276 <a id="tolower" name="tolower"></a>
277 <h2 class="memtitle"><span class="permalink"><a href="#tolower">◆ </a></span>tolower()</h2>
278
279 <div class="memitem">
280 <div class="memproto">
281 <table class="memname">
282 <tr>
283 <td class="memname">char tolower </td>
284 <td>(</td>
285 <td class="paramtype">char </td>
286 <td class="paramname"><em>c</em></td><td>)</td>
287 <td></td>
288 </tr>
289 </table>
290 </div><div class="memdoc">
291 <p >Returns lowercase version of character <b>c</b> if it is a letter (A-Z), otherwise it returns the input value unchanged. </p><dl class="params"><dt>Parameters</dt><dd>
292 <table class="params">
293 <tr><td class="paramname">c</td><td>Character to test </td></tr>
294 </table>
295 </dd>
296 </dl>
297
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