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atoi(9r)


NAME

  atoi - General: Converts an ASCII string to an integer


SYNOPSIS

  int atoi(
	  char *s1 );


ARGUMENTS

  s1  Specifies a pointer to a string (an array of characters terminated by a
      null character).


DESCRIPTION

  The atoi interface converts the specified ASCII string to an integer. The
  string can contain decimal integer constants.	 Specifically, the atoi
  interface converts the specified ASCII character string up to the first
  character inconsistent with the format of a decimal integer to an integer
  data type. Leading white-space characters are ignored.


NOTES

  The atoi interface is a modified version of the atoi C library interface
  that applications call. The kernel version of atoi is intended for use in
  those few cases in the kernel where the conversion of an ASCII string to an
  integer is required (for example, generic boot code).


RETURN VALUES

  The atoi interface returns the converted value of an integer if the
  specified ASCII string is in the expected form. Otherwise, it returns a
  negative integer.

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