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This page displays the COHERENT manpage for sigdelset() [Delete a signal from a set].
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sigdelset() -- Signal Function (libc) Delete a signal from a set #include <signal.h> int sigdelset (set, signo) sigset_t *set; int signo; sigdelset() is one of a set of signalling functions that manipulate data objects addressable by the application, instead of a set of signals known to the system. It deletes the signal signo from the set of signals to which set points. If all goes well, sigdelset() returns zero. If signo is set to an invalid or unsupported value, it returns -1 and sets errno to EINVAL. See Also libc, sigaction(), sigaddset(), sigemptyset(), sigfillset(), sigismember() Notes If your program is compiled using the System V Release 4 compilation environment, this is a function that is linked in from libc. If not, a macro form is used.