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prdtoa.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
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00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998-2000
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
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00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #ifndef prdtoa_h___
00039 #define prdtoa_h___
00040 
00041 #include "prtypes.h"
00042 
00043 PR_BEGIN_EXTERN_C
00044 
00045 /*
00046 ** PR_strtod() returns as a double-precision floating-point number
00047 ** the  value represented by the character string pointed to by
00048 ** s00. The string is scanned up to the first unrecognized
00049 ** character.
00050 **a
00051 ** If the value of se is not (char **)NULL, a  pointer  to
00052 ** the  character terminating the scan is returned in the location pointed
00053 ** to by se. If no number can be formed, se is set to s00, and
00054 ** zero is returned.
00055 */
00056 #if defined(HAVE_WATCOM_BUG_1)
00057 /* this is a hack to circumvent a bug in the Watcom C/C++ 11.0 compiler
00058 ** When Watcom fixes the bug, remove the special case for Win16
00059 */
00060 PRFloat64 __pascal __loadds __export
00061 #else
00062 NSPR_API(PRFloat64)
00063 #endif
00064 PR_strtod(const char *s00, char **se);
00065 
00066 /*
00067 ** PR_cnvtf()
00068 ** conversion routines for floating point
00069 ** prcsn - number of digits of precision to generate floating
00070 ** point value.
00071 */
00072 NSPR_API(void) PR_cnvtf(char *buf, PRIntn bufsz, PRIntn prcsn, PRFloat64 fval);
00073 
00074 /*
00075 ** PR_dtoa() converts double to a string.
00076 **
00077 ** ARGUMENTS:
00078 ** If rve is not null, *rve is set to point to the end of the return value.
00079 ** If d is +-Infinity or NaN, then *decpt is set to 9999.
00080 **
00081 ** mode:
00082 **     0 ==> shortest string that yields d when read in
00083 **           and rounded to nearest.
00084 */
00085 NSPR_API(PRStatus) PR_dtoa(PRFloat64 d, PRIntn mode, PRIntn ndigits,
00086        PRIntn *decpt, PRIntn *sign, char **rve, char *buf, PRSize bufsize);
00087 
00088 PR_END_EXTERN_C
00089 
00090 #endif /* prdtoa_h___ */