man pages section 3: Basic Library Functions
    
A
 
 abort -- terminate the process abnormally ( Index Term Link )
 
 abs -- return absolute value of integer ( Index Term Link )
 
 accounting, time accounting for current process -- times ( Index Term Link )
 
 acquire and release stream lock -- flockfile ( Index Term Link )
  funlockfile ( Index Term Link )
 
 additional severities, define -- addsev ( Index Term Link )
 
 address of symbol, get address in shared object or executable -- dlsym ( Index Term Link )
 
 addsev -- define additional severities ( Index Term Link )
 
 addseverity -- build a list of severity levels for an application for use with fmtmsg ( Index Term Link )
 
 alarm, schedule signal after interval in microseconds -- ualarm ( Index Term Link )
 
 alphasort -- scan a directory ( Index Term Link )
 
 applications
  build a list of severity levels for use with fmtmsg -- addseverity ( Index Term Link )
  display a message on stderr or system console -- fmtmsg ( Index Term Link )
  get entries from symbol table -- nlist ( Index Term Link )
 
 arithmetic, compute the quotient and remainder -- div ( Index Term Link )
 
 arithmetic, 48-bit integer, generate uniformly distributed pseudo-random numbers -- drand48 ( Index Term Link )
 
 ascftime -- convert date and time to string ( Index Term Link )
 
 assert -- verify program assertion ( Index Term Link )
 
 associate a stream with a file descriptor -- fdopen ( Index Term Link )
 
 atexit -- register a function to run at process termination or object unloading ( Index Term Link )
 
 atof -- convert string to double-precision number ( Index Term Link )
 
 atoi -- string conversion routines ( Index Term Link )
 
 atol -- string conversion routines ( Index Term Link )
 
 atoll -- string conversion routines ( Index Term Link )
 
 attropen -- open a file ( Index Term Link )