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Last update Sun Mar 4 12:00:59 2018
Runtime Library
Constants
Data types
Standard C
assert.h
complex.h
ctype.h
fenv.h
float.h
locale.h
math.h
setjmp.h
signal.h
stdarg.h
stddef.h
stdio.h
stdlib.h
string.h
time.h
Standard C++
IOstream
IOstream Classes
new
Win32
gc.h
DOS, DOS32, Win16
bios.h
cerror.h
disp.h
dos.h
dos.h part 2
emm.h
handle.h
int.h
msmouse.h
sound.h
swap.h
tsr.h
winio.h
Other C
bitops.h
conio.h
controlc.h
direct.h
fltpnt.h
io.h
page.h
process.h
search.h
sys\stat.h
tabsize.h
trace.h
utime.h
unmangle.h
util.h
Other C++
regexp.h
class complex
<h1><a name="signal">signal.h</a> </h1> <ul> <li><a href="#raise"><strong>raise</strong></a> <li><a href="#signal"><strong>signal</strong></a> </ul> <hr> <h2><a name="raise">raise</a> </h2><dl> <dt><strong>Header</strong></dt> <dd>signal.h </dd> <dt><strong>Prototype</strong></dt> <dd><tt>int raise(int sig); </tt></dd> <dt><strong>Description</strong></dt> <dd>raise issues a signal to the executing program. The signal type, sig, is discussed in the signal description. When the signal is raised by the raise function call, the current signal-handling routine will be called. See <a href="#signal">signal()</a> for a complete description. </dd> <dt><strong>Return Value</strong></dt> <dd>Returns 0 if successful, otherwise returns a non-zero value. </dd> <dt><strong>Compatibility</strong></dt> <dd>DOS Windows 3.x Phar Lap DOSX Win32 </dd> <dt><strong>See Also</strong></dt> <dd><a href="#signal">signal</a> </dd> <dt><strong>Example</strong></dt> <dd> <pre>/* Example for raise and signal */ #include <signal.h> #include <stdio.h> #include <stdlib.h> void div_zero(int val) { printf("Divide by zero detected!\n"); exit(EXIT_FAILURE); } int main() { float numerator = 3.0F; float denominator = 0.0F; if (<strong>signal</strong>(SIGFPE, div_zero) == SIG_ERR) { perror("Could not set signal SIGFPR"); abort(); } if (denominator == 0.0F) <strong>raise</strong>(SIGFPE); else printf("The result of the division is %g\n", numerator / denominator); return EXIT_SUCCESS; } </pre> </dd> <dt><strong>Output</strong></dt> <dd> <pre>Divide by zero detected! </pre> </dd> </dl> <hr> <h2><a name="signal">signal</a> </h2><dl> <dt><strong>Header</strong></dt> <dd>signal.h </dd> <dt><strong>Prototype</strong></dt> <dd><tt>void (*signal(int sig, void (__cdecl *handler)(int)))(int); </tt></dd> <dt><strong>Description</strong></dt> <dd>signal allows a program to define how signals from the operating system are handled. Argument sig must be one of these constants: <p> <table class="structure"> <tr> <th>Constant <th>Description <tr> <td>NSIG <td>The number of signals <tr> <td>SIGABRT <td>Abnormal termination <tr> <td>SIGBREAK <td>Control-break <tr> <td>SIGFPE <td>Floating-point error <tr> <td>SIGILL <td>Illegal instruction <tr> <td>SIGINT <td>Interrupt <tr> <td>SIGSEGV <td>Segment violation <tr> <td>SIGTERM <td>Terminate (CTRL+ C) </table> <p> The following macros are special values for <em>handler</em>: <p> <table class="structure"> <tr> <th>Macro <th>Description <tr> <td>SIG_DFL <td>Handled in the default manner. <tr> <td>SIG_IGN <td>Ignored the signal. </table> <p> <strong>signal</strong> sets the response. <em>handler</em> must be declared with C linkage. When a signal occurs, the signal's behavior is reset to SIG_DFL, the function for signal is called and sig is passed to it. </dd> <dt><strong>Return Value</strong></dt> <dd>Returns the previous value of handler. A return value of SIG_ERR indicates an error and errno is set. </dd> <dt><strong>Compatibility</strong></dt> <dd>DOS Windows 3.x Phar Lap DOSX Win32 </dd> <dt><strong>See Also</strong></dt> <dd><a href="#raise">raise</a> </dd> </dl> </div> <div id="footernav"> <a href="https://www.digitalmars.com/" title="digitalmars.com">Home</a> | <a href="/index.cgi/speech/https://digitalmars.com/rtl/../ctg/ctg.html" title="Compiler and Tools Guide">Compiler & Tools</a> | <a href="/index.cgi/speech/https://digitalmars.com/rtl/../ugr/ugr.html" title="IDDE Reference">IDDE Reference</a> | <a href="/index.cgi/speech/https://digitalmars.com/rtl/../stl/index.html" title="Standard Template Library">STL</a> | <a href="https://www.digitalmars.com/advancedsearch.html" title="Search Digital Mars web site">Search</a> | <a href="https://www.digitalmars.com//download/freecompiler.html" title="download C++">Download</a> | <a href="https://www.digitalmars.com/NewsGroup.html" title="Forums">Forums</a> </div> <div id="copyright"> Copyright © 1999-2018 by Digital Mars ®, All Rights Reserved | Page generated by <a href="https://dlang.org/spec/ddoc.html">Ddoc</a>. </div> </div><div class="naked_ctrl"> <form action="/index.cgi/speech" method="get" name="gate"> <p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://digitalmars.com/rtl/signal.html">(->オリジナル)</a> / <label>アドレス: <input type="text" name="naked_post_url" value="https://digitalmars.com/rtl/signal.html" size="22" /></label> <label>モード: <select name="naked_post_mode"> <option value="default">デフォルト</option> <option value="speech" selected="selected">音声ブラウザ</option> <option value="ruby">ルビ付き</option> <option value="contrast">配色反転</option> <option value="larger-text">文字拡大</option> <option value="mobile">モバイル</option> </select> <input type="submit" value="表示" /> </p> </form> </div> </body> </html>