c...

This section describes the following functions, macros and external variables:

• c16rtomb - convert UTF-16 character to multi-byte character
• c32rtomb - convert UTF-32 character to multi-byte character
• cabs - calculate absolute value of complex number (BS2000)
• calloc - allocate memory
• catclose - close message catalog
• catgets - read message
• catopen - open message catalog
• cbrt, cbrtf, cbrtl - cube root
• cdisco - disconnect contingency routine (BS2000)
• ceil, ceilf, ceill - round up floating-point number
• cenaco - define contingency routine (BS2000)
• cfgetispeed - get input baud rate
• cfgetospeed - get output baud rate
• cfsetispeed - set input baud rate
• cfsetospeed - set output baud rate
• chdir - change working directory
• chmod, fchmodat - change mode of file
• chown, fchownat - change owner and group of file
• chroot - change root directory
• clearerr - clear end-of-file and error indicators
• clock - report CPU time used by a process
• clock_gettime, clock_gettime64 - get time of a specified clock
• close - close file
• closedir - close directory
• closelog, openlog, setlogmask, syslog - control system log
• compile - produce compiled regular expression
• confstr - get string value of system variable
• copysign, copysignf, copysignl - copy sign
• cos, cosf, cosl - cosine function
• cosh, coshf, coshl - hyperbolic cosine function
• cputime - calculate CPU time used by current task (BS2000)
• creat, creat64 - create new file or overwrite existing one
• crypt - encode strings using algorithms
• cstxit - define STXIT routine (BS2000)
• ctermid - generate pathname for controlling terminal
• ctime, ctime64 - convert date and time to string
• ctime_r - thread-safe conversion of date and time to string
• cuserid - get login name