`libc' includes software developed by the University of California, Berkeley and its contributors.

`libc' includes software developed by Martin Jackson, Graham Haley and Steve Chamberlain of Tadpole Technology and released to Cygnus.

`libc' uses floating point converstion software developed at AT&T, which includes this copyright information:

The author of this software is David M. Gay.

Copyright (c) 1991 by AT&T.

Permission to use, copy, modify, and distribute this software for any purpose without fee is hereby granted, provided that this entire notice is included in all copies of any software which is or includes a copy or modification of this software and in all copies of the supporting documentation for such software.

THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR AT&T MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.

Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.

Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, subject to the terms of the GNU General Public License, which includes the provision that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.

Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions.

Standard Utility Functions (`stdlib.h')

This chapter groups utility functions useful in a variety of programs. The corresponding declarations are in the header file `stdlib.h'.

• abort: Abnormal termination of a program
• abs: Integer absolute value (magnitude)
• assert: Macro for Debugging Diagnostics
• atexit: Request execution of functions at program exit
• atof: String to double or float
• atoi: String to integer
• atol: Convert string to long
• bsearch: Binary search
• calloc: Allocate space for arrays
• div: Divide two integers
• ecvtbuf: Double or float to string of digits
• ecvt: Double or float to string of digits (malloc result)
• gvcvt: Format double or float as string
• exit: End program execution
• getenv: Look up environment variable
• labs: Long integer absolute value (magnitude)
• ldiv: Divide two long integers
• malloc: Allocate and manage memory (malloc, realloc, free)
• mbtowc: Minimal multibyte to wide character converter
• qsort: Sort an array
• rand: Pseudo-random numbers
• strtod: String to double or float
• strtol: String to long
• strtoul: String to unsigned long
• system: Execute command string
• wctomb: Minimal wide character to multibyte converter