stdlib/FreeBSD/atoi.3

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  32 .\"     @(#)atoi.3      8.1 (Berkeley) 6/4/93
  33 .\" $FreeBSD: src/lib/libc/stdlib/atoi.3,v 1.14 2007/10/19 06:23:39 davidxu Exp $
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  35 .Dd June 4, 1993
  36 .Dt ATOI 3
  37 .Os
  38 .Sh NAME
  39 .Nm atoi
  40 .Nd convert
  41 .Tn ASCII
  42 string to integer
  43 .Sh LIBRARY
  44 .Lb libc
  45 .Sh SYNOPSIS
  46 .In stdlib.h
  47 .Ft int
  48 .Fn atoi "const char *nptr"
  49 .Sh DESCRIPTION
  50 The
  51 .Fn atoi
  52 function converts the initial portion of the string pointed to by
  53 .Fa nptr
  54 to
  55 .Vt int
  56 representation.
  57 .Pp
  58 It is equivalent to:
  59 .Bd -literal -offset indent
  60 (int)strtol(nptr, (char **)NULL, 10);
  61 .Ed
  62 .Pp
  63 The
  64 .Fn atoi
  65 function has been deprecated by
  66 .Fn strtol
  67 and should not be used in new code.
  68 .Sh ERRORS
  69 The function
  70 .Fn atoi
  71 need not affect the value of
  72 .Va errno
  73 on an error.
  74 .Sh SEE ALSO
  75 .Xr atof 3 ,
  76 .Xr atol 3 ,
  77 .Xr strtod 3 ,
  78 .Xr strtol 3 ,
  79 .Xr strtoul 3
  80 .Sh STANDARDS
  81 The
  82 .Fn atoi
  83 function conforms to
  84 .St -p1003.1-90 ,
  85 .St -isoC ,
  86 and
  87 .St -isoC-99 .