--- Libc/Libc-1725.40.4/stdlib/FreeBSD/strtod.3
+++ Libc/Libc-583/stdlib/FreeBSD/strtod.3
@@ -13,6 +13,10 @@
 .\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
+.\" 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
+.\"	California, Berkeley and its contributors.
 .\" 4. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
@@ -30,9 +34,9 @@
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)strtod.3	8.1 (Berkeley) 6/4/93
-.\" $FreeBSD: src/lib/libc/stdlib/strtod.3,v 1.22 2007/12/16 21:19:28 das Exp $
+.\" $FreeBSD: src/lib/libc/stdlib/strtod.3,v 1.19 2003/05/22 13:02:28 ru Exp $
 .\"
-.Dd July 2, 2021
+.Dd March 2, 2003
 .Dt STRTOD 3
 .Os
 .Sh NAME
@@ -45,20 +49,11 @@
 .Sh SYNOPSIS
 .In stdlib.h
 .Ft double
-.Fo strtod
-.Fa "const char *restrict nptr"
-.Fa "char **restrict endptr"
-.Fc
+.Fn strtod "const char * restrict nptr" "char ** restrict endptr"
 .Ft float
-.Fo strtof
-.Fa "const char *restrict nptr"
-.Fa "char **restrict endptr"
-.Fc
+.Fn strtof "const char * restrict nptr" "char ** restrict endptr"
 .Ft "long double"
-.Fo strtold
-.Fa "const char *restrict nptr"
-.Fa "char **restrict endptr"
-.Fc
+.Fn strtold "const char * restrict nptr" "char ** restrict endptr"
 .Sh DESCRIPTION
 These conversion
 functions convert the initial portion of the string
@@ -71,17 +66,16 @@
 .Vt "long double"
 representation, respectively.
 .Pp
-The expected form of the string
-is an optional plus (``+'') or minus (``\-'') sign,
-followed by either:
+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
+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).
+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
@@ -95,33 +89,9 @@
 For hexadecimal constants, the scaling is instead done by powers
 of 2.
 .Pp
-If the portion of the string following the optional
-plus or minus sign begins with
-.Dq INFINITY
-or
-.Dq INF ,
-ignoring case, it is interpreted as an infinity.
-.Pp
-If the portion of the string following the optional
-plus or minus sign begins with
-.Dq NAN ,
-ignoring case, it is interpreted as a quiet \*(Na.
-The syntax
-.Dq Xo Pf NAN( Ar "s" ) Xc ,
-where
-.Ar s
-is an alphanumeric string, produces the same value as the call
-.Fo nan
-.Qq Ar s Ns
-.Fc
-(respectively,
-.Fo nanf
-.Qq Ar s Ns
-.Fc
-and
-.Fo nanl
-.Qq Ar s Ns
-.Fc . )
+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
@@ -130,28 +100,13 @@
 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 ,
 .Fn strtof ,
 and
 .Fn strtold
-functions return the converted value, if any, rounded to the nearest
-representable value of the corresponding type according to the rounding
-mode currently in effect.
-See
-.Xr fegetround 3
-for more information on rounding modes.
-If flush-to-zero behavior is enabled in the current floating-point
-environment, the behavior is identical except that any subnormal
-values that would be returned will instead be returned as the
-correspondingly-signed zero.
+functions return the converted value, if any.
 .Pp
 If
 .Fa endptr
@@ -166,26 +121,20 @@
 is stored in the location referenced by
 .Fa endptr .
 .Pp
-The input is converted by first rounding the value to the precision of
-the target type but allowing an unbounded exponent range.
-If the resulting exponent is too large for the target
-type, overflow is deemed to have occurred.
-Overflow is signalled by returning
+If the correct value would cause overflow, plus or minus
 .Dv HUGE_VAL ,
 .Dv HUGE_VALF ,
 or
 .Dv HUGE_VALL
-(according to the sign of the input and type of the return value), and storing
-.Er ERANGE
-in
-.Va errno .
-.Pp
-If the input string is not an explicit representation of zero and the
-correctly-rounded result is a subnormal or zero value, then
+is returned (according to the sign and type of the return value), and
 .Er ERANGE
 is stored in
-.Va errno
-to indicate underflow has occurred.
+.Va errno .
+If the correct value would cause underflow, zero is
+returned and
+.Er ERANGE
+is stored in
+.Va errno .
 .Sh ERRORS
 .Bl -tag -width Er
 .It Bq Er ERANGE
@@ -195,8 +144,6 @@
 .Xr atof 3 ,
 .Xr atoi 3 ,
 .Xr atol 3 ,
-.Xr nan 3 ,
-.Xr strtod_l 3 ,
 .Xr strtol 3 ,
 .Xr strtoul 3 ,
 .Xr wcstod 3
@@ -205,7 +152,13 @@
 .Fn strtod
 function
 conforms to
-.St -isoC-99 .
+.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
 .Bd -literal
 Copyright (c) 1998 by Lucent Technologies