register a function to be called at normal process termination NAME atexit - register a function to be called at normal process termination LIBRARY Standard C library ( libc , -lc …return name of a terminal NAME ttyname, ttyname_r - return name of a terminal LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <unistd.h> char *ttyname(int fd ); int tty…return name of a terminal NAME ttyname, ttyname_r - return name of a terminal LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <unistd.h> char *ttyname(int fd ); int tty…get a password NAME getpass - get a password LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <unistd.h> [[deprecated]] char *getpass(const char * prompt ); Feature Test…test for initial shift state NAME mbsinit - test for initial shift state LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <wchar.h> int mbsinit(const mbstate_t * ps ); D…maximum multibyte length of a character across all locales NAME MB_LEN_MAX - maximum multibyte length of a character across all locales LIBRARY Standard C library ( libc ) SYNOPSIS…absolute value of a complex number NAME cabs, cabsf, cabsl - absolute value of a complex number LIBRARY Math library ( libm , -lm ) SYNOPSIS #include <complex.h> double cabs(double…absolute value of a complex number NAME cabs, cabsf, cabsl - absolute value of a complex number LIBRARY Math library ( libm , -lm ) SYNOPSIS #include <complex.h> double cabs(double…absolute value of a complex number NAME cabs, cabsf, cabsl - absolute value of a complex number LIBRARY Math library ( libm , -lm ) SYNOPSIS #include <complex.h> double cabs(double…wide-character transliteration NAME towctrans - wide-character transliteration LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <wctype.h> wint_t towctrans(wint_t wc , w…calculate the length of a string NAME strlen - calculate the length of a string LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <string.h> size_t strlen(const char * s …compare thread IDs NAME pthread_equal - compare thread IDs LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNOPSIS #include <pthread.h> int pthread_equal(pthread_t t1 , p…determine the length of a wide-character string NAME wcslen - determine the length of a wide-character string LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <wchar.h> …close a named semaphore NAME sem_close - close a named semaphore LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNOPSIS #include <semaphore.h> int sem_close(sem_t * sem …set cancelability state and type NAME pthread_setcancelstate, pthread_setcanceltype - set cancelability state and type LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNO…set cancelability state and type NAME pthread_setcancelstate, pthread_setcanceltype - set cancelability state and type LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNO…determine columns needed for a wide character NAME wcwidth - determine columns needed for a wide character LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #define _XOPEN_SOURCE …determine columns needed for a fixed-size wide-character string NAME wcswidth - determine columns needed for a fixed-size wide-character string LIBRARY Standard C library ( libc , …test for printing wide character NAME iswprint - test for printing wide character LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <wctype.h> int iswprint(wint_t wc ); D…obtain error diagnostic for functions in the dlopen API NAME dlerror - obtain error diagnostic for functions in the dlopen API LIBRARY Dynamic linking library ( libdl , -ldl ) SYNO…