man pages section 3: Basic Library Functions
    
D
 
 data base subroutines -- dbm ( Index Term Link )
  dbmclose ( Index Term Link )
  dbminit ( Index Term Link )
  delete ( Index Term Link )
  fetch ( Index Term Link )
  firstkey ( Index Term Link )
  nextkey ( Index Term Link )
  store ( Index Term Link )
 
 database functions -- dbm_clearerr ( Index Term Link )
 
 database functions -- dbm_close ( Index Term Link )
 
 database functions -- dbm_delete ( Index Term Link )
 
 database functions -- dbm_error ( Index Term Link )
 
 database functions -- dbm_fetch ( Index Term Link )
 
 database functions -- dbm_firstkey ( Index Term Link )
 
 database functions -- dbm_nextkey ( Index Term Link )
 
 database functions -- dbm_open ( Index Term Link )
 
 database functions -- dbm_store ( Index Term Link )
 
 database functions -- ndbm ( Index Term Link )
 
 date and time
  convert to string -- asctime ( Index Term Link )
  convert to string -- asctime_r ( Index Term Link )
  convert to string -- ctime ( Index Term Link )
  convert to string -- ctime_r ( Index Term Link )
  convert to string -- gmtime ( Index Term Link )
  convert to string -- gmtime_r ( Index Term Link )
  convert to string -- localtime ( Index Term Link )
  convert to string -- localtime_r ( Index Term Link )
  convert to string -- tzset ( Index Term Link )
  convert user format date and time -- getdate ( Index Term Link )
  -- gettimeofday ( Index Term Link ) ( Index Term Link )
 
 date and time conversion -- strptime ( Index Term Link )
 
 dbm -- data base subroutines ( Index Term Link )
 
 dbm_clearerr -- database functions ( Index Term Link )
 
 dbm_close -- database functions ( Index Term Link )
 
 dbm_delete -- database functions ( Index Term Link )
 
 dbm_error -- database functions ( Index Term Link )
 
 dbm_fetch -- database functions ( Index Term Link )
 
 dbm_firstkey -- database functions ( Index Term Link )
 
 dbm_nextkey -- database functions ( Index Term Link )
 
 dbm_open -- database functions ( Index Term Link )
 
 dbm_store -- database functions ( Index Term Link )
 
 dbmclose -- data base subroutines ( Index Term Link )
 
 dbminit -- data base subroutines ( Index Term Link )
 
 dcgettext -- message handling functions ( Index Term Link )
 
 dcngettext -- message handling functions ( Index Term Link )
 
 debugging memory allocator
  -- calloc ( Index Term Link )
  -- cfree ( Index Term Link )
  -- free ( Index Term Link )
  -- mallinfo ( Index Term Link )
  -- malloc ( Index Term Link )
  -- mallopt ( Index Term Link )
  -- memalign ( Index Term Link )
  -- realloc ( Index Term Link )
  -- valloc ( Index Term Link )
 
 decimal record from double-precision floating -- double_to_decimal ( Index Term Link )
 
 decimal record from extended-precision floating -- extended_to_decimal ( Index Term Link )
 
 decimal record from quadruple-precision floating -- quadruple_to_decimal ( Index Term Link )
 
 decimal record from single-precision floating -- single_to_decimal ( Index Term Link )
 
 decimal record to double-precision floating -- decimal_to_double ( Index Term Link )
 
 decimal record to extended-precision floating -- decimal_to_extended ( Index Term Link )
 
 decimal record to quadruple-precision floating -- decimal_to_quadruple ( Index Term Link )
 
 decimal record to single-precision floating -- decimal_to_single ( Index Term Link )
 
 decimal_to_double -- decimal record to double-precision floating ( Index Term Link )
 
 decimal_to_extended -- decimal record to extended-precision floating ( Index Term Link )
 
 decimal_to_quadruple -- decimal record to quadruple-precision floating ( Index Term Link )
 
 decimal_to_single -- decimal record to single-precision floating ( Index Term Link )
 
 decompose floating-point number
  -- modf ( Index Term Link )
  -- modff ( Index Term Link )
 
 define character class -- wctype ( Index Term Link )
 
 define character mapping -- wctrans ( Index Term Link )
 
 define default catalog -- setcat ( Index Term Link )
 
 define the label for pfmt() and lfmt(). -- setlabel ( Index Term Link )
 
 delete -- data base subroutines ( Index Term Link )
 
 detach a name from a STREAMS-based file descriptor -- fdetach ( Index Term Link )
 
 determine conversion object status -- mbsinit ( Index Term Link )
 
 device number, manage -- makedev, major, minor ( Index Term Link )
 
 dgettext -- message handling functions ( Index Term Link )
 
 difftime -- computes the difference between two calendar times ( Index Term Link )
 
 directio -- provide advice to file system ( Index Term Link )
 
 directories
  get current working directory pathname -- getwd ( Index Term Link )
  get pathname of current working directory -- getcwd ( Index Term Link )
 
 directory operations
  -- alphasort ( Index Term Link )
  -- scandir ( Index Term Link )
 
 dirname -- report parent directory name of file path name ( Index Term Link )
 
 display error message in standard format -- pfmt ( Index Term Link )
 
 display error message in standard format and pass to logging and monitoring services -- lfmt ( Index Term Link )
 
 display error message in standard format and pass to logging and monitoring services -- vlfmt ( Index Term Link )
 
 display error message in standard format and pass to logging and monitoring services -- vpfmt ( Index Term Link )
 
 div -- compute quotient and remainder ( Index Term Link )
 
 division and remainder operations
  -- div ( Index Term Link )
  -- ldiv ( Index Term Link )
 
 dladdr -- translate address to symbolic information ( Index Term Link )
 
 dladdr1 -- translate address to symbolic information ( Index Term Link )
 
 dlclose -- close a shared object ( Index Term Link )
 
 dldump -- create new file from dynamic object component of calling process ( Index Term Link )
 
 dlerror -- get diagnostic information ( Index Term Link )
 
 dlinfo -- dynamic load information ( Index Term Link )
 
 dlopen -- open a shared object ( Index Term Link )
 
 dlsym -- get address of symbol in shared object or executable ( Index Term Link )
 
 dngettext -- message handling functions ( Index Term Link )
 
 double_to_decimal -- decimal record from double-precision floating ( Index Term Link )
 
 dup2 -- duplicate an open file descriptor ( Index Term Link )
 
 duplicate an open file descriptor -- dup2 ( Index Term Link )
 
 dynamic linking
  close a shared object -- dlclose ( Index Term Link )
  create new file from dynamic object component -- dldump ( Index Term Link )
  get address of symbol in shared object or executable -- dlsym ( Index Term Link )
  get diagnostic information -- dlerror ( Index Term Link )
  open a shared object -- dlopen ( Index Term Link )
 
 dynamic load information -- dlinfo ( Index Term Link )