--- Libc/Libc-262.2.12/stdlib/strtod.3
+++ Libc/Libc-583/stdlib/strtod.3
@@ -34,48 +34,95 @@
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)strtod.3	8.1 (Berkeley) 6/4/93
-.\" $FreeBSD: src/lib/libc/stdlib/strtod.3,v 1.13 2001/09/07 14:46:36 asmodai Exp $
-.\"
-.Dd June 4, 1993
+.\" $FreeBSD: src/lib/libc/stdlib/strtod.3,v 1.19 2003/05/22 13:02:28 ru Exp $
+.\"
+.Dd March 2, 2003
 .Dt STRTOD 3
 .Os
 .Sh NAME
-.Nm strtod
+.Nm strtod , strtof , strtold
 .Nd convert
 .Tn ASCII
-string to double
+string to floating point
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In stdlib.h
 .Ft double
-.Fn strtod "const char *nptr" "char **endptr"
+.Fo strtod
+.Fa "const char *restrict nptr"
+.Fa "char **restrict endptr"
+.Fc
+.Ft float
+.Fo strtof
+.Fa "const char *restrict nptr"
+.Fa "char **restrict endptr"
+.Fc
+.Ft "long double"
+.Fo strtold
+.Fa "const char *restrict nptr"
+.Fa "char **restrict endptr"
+.Fc
 .Sh DESCRIPTION
-The
-.Fn strtod
-function converts the initial portion of the string
+These conversion
+functions convert the initial portion of the string
 pointed to by
 .Fa nptr
 to
-.Em double
-representation.
-.Pp
-The expected form of the string is an optional plus (``+'') or minus
-sign (``\-'') followed by a sequence of digits optionally containing
-a decimal-point character, optionally followed by an exponent.
-An exponent consists of an ``E'' or ``e'', followed by an optional plus
-or minus sign, followed by a sequence of digits.
-.Pp
-Leading white-space characters in the string (as defined by the
+.Vt double ,
+.Vt float ,
+and
+.Vt "long double"
+representation, respectively.
+.Pp
+The expected form of the string
+is an optional plus (``+'') or minus (``\-'') sign,
+followed by either:
+.Bl -bullet
+.It
+a decimal significand, consisting of a sequence of decimal digits
+(optionally containing a decimal-point character) or
+.It
+a hexadecimal significand, consisting of a ``0X'' or ``0x'' followed
+by a sequence of hexadecimal digits
+(optionally containing a decimal-point character).
+.El
+.Pp
+In both cases, the significand may be optionally followed by an
+exponent.
+An exponent consists of an ``E'' or ``e'' (for decimal
+constants) or a ``P'' or ``p'' (for hexadecimal constants),
+followed by an optional plus or minus sign, followed by a
+sequence of decimal digits.
+For decimal constants, the exponent indicates the power of 10 by
+which the significand should be scaled.
+For hexadecimal constants, the scaling is instead done by powers
+of 2.
+.Pp
+Alternatively, if the portion of the string following the optional
+plus or minus sign begins with ``INFINITY'' or ``NAN'', ignoring
+case, it is interpreted as an infinity or a quiet NaN, respectively.
+.Pp
+In any of the above cases, leading white-space characters in the
+string (as defined by the
 .Xr isspace 3
 function) are skipped.
 The decimal point
 character is defined in the program's locale (category
 .Dv LC_NUMERIC ) .
+.Pp
+Extended locale versions of these functions are documented in
+.Xr strtod_l 3 .
+See
+.Xr xlocale 3
+for more information.
 .Sh RETURN VALUES
 The
-.Fn strtod
-function returns the converted value, if any.
+.Fn strtod ,
+.Fn strtof ,
+and
+.Fn strtold
+functions return the converted value, if any.
 .Pp
 If
 .Fa endptr
@@ -91,8 +138,11 @@
 .Fa endptr .
 .Pp
 If the correct value would cause overflow, plus or minus
-.Dv HUGE_VAL
-is returned (according to the sign of the value), and
+.Dv HUGE_VAL ,
+.Dv HUGE_VALF ,
+or
+.Dv HUGE_VALL
+is returned (according to the sign and type of the return value), and
 .Er ERANGE
 is stored in
 .Va errno .
@@ -110,31 +160,43 @@
 .Xr atof 3 ,
 .Xr atoi 3 ,
 .Xr atol 3 ,
+.Xr strtod_l 3 ,
 .Xr strtol 3 ,
-.Xr strtoul 3
+.Xr strtoul 3 ,
+.Xr wcstod 3
 .Sh STANDARDS
 The
 .Fn strtod
 function
 conforms to
-.St -isoC .
+.St -isoC-99 ,
+with the exception of the bug noted below.
+.Sh BUGS
+These routines do not recognize the C99 ``NaN(...)'' syntax.
 .Sh AUTHORS
 The author of this software is
 .An David M. Gay .
 .Pp
-Copyright (c) 1991 by AT&T.
-.Pp
-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.
-.Pp
-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.
-.Pp
-Contact your vendor for a free copy of the source code to
-.Fn strtod
-and accompanying functions.
+.Bd -literal
+Copyright (c) 1998 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+.Ed