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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* Public interface to portable double-precision floating point to string
* and back conversion package.
*/
;
namespace js // namespace js
/*
* js_strtod_harder() returns as a double-precision floating-point number the
* value represented by the character string pointed to by s00. The string is
* scanned up to the first unrecognized character.
*
* If se is not nullptr, *se receives a pointer to the character terminating
* the scan. If no number can be formed, *se receives a pointer to the first
* unparseable character in s00, and zero is returned.
*
* On overflow, this function returns infinity and does not indicate an error.
*/
double ;
/*
* Modes for converting floating-point numbers to strings.
*
* Some of the modes can round-trip; this means that if the number is converted
* to a string using one of these mode and then converted back to a number, the
* result will be identical to the original number (except that, due to ECMA, -0
* will get converted to +0). These round-trip modes return the minimum number
* of significand digits that permit the round trip.
*
* Some of the modes take an integer parameter <precision>.
*/
/* NB: Keep this in sync with number_constants[]. */
typedef enum JSDToStrMode JSDToStrMode;
/* Maximum number of characters (including trailing null) that a DTOSTR_STANDARD
* or DTOSTR_STANDARD_EXPONENTIAL conversion can produce. This maximum is
* reached for a number like -0.0000012345678901234567. */
/* Maximum number of characters (including trailing null) that one of the other
* conversions can produce. This maximum is reached for TO_FIXED, which can
* generate up to 21 digits before the decimal point. */
/*
* DO NOT USE THIS FUNCTION IF YOU CAN AVOID IT. js::NumberToCString() is a
* better function to use.
*
* Convert dval according to the given mode and return a pointer to the
* resulting ASCII string. If mode == DTOSTR_STANDARD and precision == 0 it's
* equivalent to ToString() as specified by ECMA-262-5 section 9.8.1, but it
* doesn't handle integers specially so should be avoided in that case (that's
* why js::NumberToCString() is better).
*
* The result is held somewhere in buffer, but not necessarily at the
* beginning. The size of buffer is given in bufferSize, and must be at least
* as large as given by the above macros.
*
* Return nullptr if out of memory.
*/
char* ;
/*
* DO NOT USE THIS FUNCTION IF YOU CAN AVOID IT. js::NumberToCString() is a
* better function to use.
*
* Convert d to a string in the given base. The integral part of d will be
* printed exactly in that base, regardless of how large it is, because there
* is no exponential notation for non-base-ten numbers. The fractional part
* will be rounded to as few digits as possible while still preserving the
* round-trip property (analogous to that of printing decimal numbers). In
* other words, if one were to read the resulting string in via a hypothetical
* base-number-reading routine that rounds to the nearest IEEE double (and to
* an even significand if there are two equally near doubles), then the result
* would equal d (except for -0.0, which converts to "0", and NaN, which is
* not equal to itself).
*
* Return nullptr if out of memory. If the result is not nullptr, it must be
* released via js_free().
*/
char* ;
/* util_DoubleToString_h */