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Annotation of 43BSDReno/lib/libc/stdlib/strtod.3, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1990 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted
        !             5: .\" provided that: (1) source distributions retain this entire copyright
        !             6: .\" notice and comment, and (2) distributions including binaries display
        !             7: .\" the following acknowledgement:  ``This product includes software
        !             8: .\" developed by the University of California, Berkeley and its contributors''
        !             9: .\" in the documentation or other materials provided with the distribution
        !            10: .\" and in all advertising materials mentioning features or use of this
        !            11: .\" software. Neither the name of the University nor the names of its
        !            12: .\" contributors may be used to endorse or promote products derived
        !            13: .\" from this software without specific prior written permission.
        !            14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            15: .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            16: .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            17: .\"
        !            18: .\"    @(#)strtod.3    5.1 (Berkeley) 5/16/90
        !            19: .\"
        !            20: .TH STRTOD 3 "May 16, 1990"
        !            21: .UC 7
        !            22: .SH NAME
        !            23: strtod \- convert ASCII string to double
        !            24: .SH SYNOPSIS
        !            25: .nf
        !            26: .ft B
        !            27: #include <stdlib.h>
        !            28: 
        !            29: double
        !            30: strtod(const char *nptr, char **endptr);
        !            31: .ft R
        !            32: .fi
        !            33: .SH DESCRIPTION
        !            34: The
        !            35: .I strtod
        !            36: function converts the initial portion of the string 
        !            37: pointed to by
        !            38: .I nptr
        !            39: to
        !            40: .I double
        !            41: representation.
        !            42: .PP
        !            43: The expected form of the string is an optional plus (``+'') or minus
        !            44: sign (``-''), followed by a sequence of digits optionally containing
        !            45: a decimal-point character, optionally followed by an exponent.
        !            46: An exponent consists of an ``E'' or ``e'', followed by an optional plus
        !            47: or minus sign, followed by a sequence of digits.
        !            48: .PP
        !            49: Leading white-space characters in the string (as defined by the
        !            50: .IR isspace (3)
        !            51: function) are skipped.
        !            52: .PP
        !            53: The
        !            54: .I strtod
        !            55: function returns the converted value, if any.
        !            56: .PP
        !            57: If
        !            58: .I endptr
        !            59: is not NULL, a pointer to the character after the last character used
        !            60: in the conversion is stored in the location referenced by
        !            61: .IR endptr .
        !            62: .PP
        !            63: If no conversion is performed, zero is returned and the value of
        !            64: .I nptr
        !            65: is stored in the location referenced by
        !            66: .IR endptr .
        !            67: .PP
        !            68: If the correct value would cause overflow, plus or minus
        !            69: .I HUGE_VAL
        !            70: is returned (according to the sign of the value), and
        !            71: .I ERANGE
        !            72: is stored in
        !            73: .IR errno .
        !            74: If the correct value would cause underflow, zero is
        !            75: returned and
        !            76: .I ERANGE
        !            77: is stored in 
        !            78: .IR errno .
        !            79: .SH ERRORS
        !            80: .TP
        !            81: [ERANGE]
        !            82: Overflow or underflow occurred.
        !            83: .SH "SEE ALSO"
        !            84: atof(3), atoi(3), atol(3), strtol(3), strtoul(3)
        !            85: .SH STANDARDS
        !            86: .B Strtod
        !            87: conforms to ANSI X3.159-1989 (``ANSI C'').
        !            88: .SH BUGS
        !            89: This manual page represents intent instead of actual practice.
        !            90: The
        !            91: .IR strtod (3)
        !            92: function is not currently available.

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