.\" Copyright (c) 1990, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the American National Standards Committee X3, on Information
.\" Processing Systems.
.\"
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.\" modification, are permitted provided that the following conditions
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.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
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.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\"     @(#)strtod.3	5.3 (Berkeley) 6/29/91
.\"
.\" Modified Sun Aug 21 17:16:22 1994 by Rik Faith (faith@cs.unc.edu)
.\" Modified Sat May 04 19:34:31 MET DST 1996 by Michael Haardt
.\"   (michael@cantor.informatik.rwth-aachen.de)
.\" Added strof, strold, aeb, 2001-06-07
.\"
.\" Japanese Version Copyright (c) 1998-1999
.\"   Michihide Hotta and NAKANO Takeo all rights reserved.
.\" Translated Fri Jun 26 1998 by Yasushi Shoji <yashi@yashi.com>
.\" Updated & Modified Sun Mar 14 1999 by NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\" Updated & Modified Sun Jul  1 16:59:53 JST 2001
.\"         by Yuichi SATO <ysato@h4.dion.ne.jp>
.\"
.TH STRTOD 3 2001-06-07 "Linux" "Library functions"
.SH ̾
strtod, strtof, strtold \- ASCII ʸư¿Ѵ
.SH 
.B #include <stdlib.h>
.sp
.BI "double strtod(const char *" nptr ", char **" endptr );
.br
.BI "float strtof(const char *" nptr ", char **" endptr );
.br
.BI "long double strtold(const char *" nptr ", char **" endptr );
.SH 
.BR strtod ,
.BR strtof ,
.B strtold
ؿ
.I nptr
ݥȤƤʸΤϤʬ򡢤줬ɽƤ
.BR double ,
.BR float ,
.B long double
ͤˤ줾Ѵ롣

Ϥʸ (Ƭʬ) ϡ
Ƭ˥ۥ磻ȥڡ (\fIis\%space\fP(3) ǧ롣ʤƤɤ)
ƥץ饹 ("+") ޤϥޥʥ ("\-") ε (ά) Ǥ롣
θ (i) 10 ʿ(ii) 16 ʿ
(iii) ̵¡(iv) NAN (׻Ǥʤnot-a-number) ³ 
.LP
.I "10 ʿ"
 1 ʸʾ 10 ʿ󤫤ʤꡢ
ɽʸ (radix charater)
(˰¸̾ ".") ޤޤ뤳Ȥ⤢롣
θ 10 ʤλؿ³Ƥɤ
10 ʤλؿ "E" ޤ "e" ȡθ֤鵭 (ά)
Ӥθ³ 1 ʸʾ 10 ʿ󤫤ʤꡢ
10 βǤ뤫ɽ
.LP
.I "16 ʿ"
ϡ"0x" ޤ "0X" Ȥθ³ 1 ʸʾ 16 ʿ󤫤ʤꡢ
ɽʸޤޤ뤳Ȥ⤢롣
θ 2 ʤλؿ³Ƥɤ
2 ʤλؿ "P" ޤ "p" ȡθ֤鵭 (ά)
Ӥθ³ 1 ʸʾ 10 ʿ󤫤ʤꡢ
2 βǤ뤫ɽ
ɽʸ 2 ʤλؿϡɤ餫¸ߤƤϤʤʤ
.LP
.I ̵
 "INF" ޤ "INFINITY" ɽ졢ʸʸ϶̤ʤ
.LP
.I NAN
 "NAN" (ʸʸ϶̤ʤ) ɽ졢
θ `(' ʸ ')' ³⤢롣
ʸϼ˰¸ NAN Υפꤹ롣

.SH ֤
δؿϡѴ줿ͤС֤

.I endptr

.B NULL
ǤʤȤϡѴ˻Ȥ줿ǽʸμʸؤΥݥ󥿡
.I endptr
ǻȤ¸롣

ѴԤʤäȤˤ 0 ֤롣
.I endptr
ȤƤ
.I nptr
 (ѴоݤǤʸγϥɥ쥹) ¸롣

οʸǤ뤬Ѵ̤Сե򵯤
ˤϡץ饹ޤϥޥʥ
.B HUGE_VAL
.RB ( HUGE_VALF ,
.BR HUGE_VALL )
֤ (ͤˤ)
.B ERANGE

.I errno
롣Ѵ̤ե򵯤ˤ 0 ꡢ
.B ERANGE

.I errno
롣
.SH 顼
.TP
.B ERANGE
Сեޤϥեä
.SH 
ANSI C Ǥ
.BR strtod
C99 Ǥ¾ 2 ĤδؿҤƤ롣
.SH Ϣ
.BR atof (3),
.BR atoi (3),
.BR atol (3),
.BR strtol (3),
.BR strtoul (3)