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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* 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/. */
/**
File Name: 9.8.1.js
ECMA Section: 9.8.1 ToString Applied to the Number Type
Description: The operator ToString convers a number m to string
as follows:
1. if m is NaN, return the string "NaN"
2. if m is +0 or -0, return the string "0"
3. if m is less than zero, return the string
concatenation of the string "-" and ToString(-m).
4. If m is Infinity, return the string "Infinity".
5. Otherwise, let n, k, and s be integers such that
k >= 1, 10k1 <= s < 10k, the number value for s10nk
is m, and k is as small as possible. Note that k is
the number of digits in the decimal representation
of s, that s is not divisible by 10, and that the
least significant digit of s is not necessarily
uniquely determined by these criteria.
6. If k <= n <= 21, return the string consisting of the
k digits of the decimal representation of s (in order,
with no leading zeroes), followed by n-k occurences
of the character '0'.
7. If 0 < n <= 21, return the string consisting of the
most significant n digits of the decimal
representation of s, followed by a decimal point
'.', followed by the remaining kn digits of the
decimal representation of s.
8. If 6 < n <= 0, return the string consisting of the
character '0', followed by a decimal point '.',
followed by n occurences of the character '0',
followed by the k digits of the decimal
representation of s.
9. Otherwise, if k = 1, return the string consisting
of the single digit of s, followed by lowercase
character 'e', followed by a plus sign '+' or minus
sign '' according to whether n1 is positive or
negative, followed by the decimal representation
of the integer abs(n1) (with no leading zeros).
10. Return the string consisting of the most significant
digit of the decimal representation of s, followed
by a decimal point '.', followed by the remaining k1
digits of the decimal representation of s, followed
by the lowercase character 'e', followed by a plus
sign '+' or minus sign '' according to whether n1 is
positive or negative, followed by the decimal
representation of the integer abs(n1) (with no
leading zeros).
Note that if x is any number value other than 0, then
ToNumber(ToString(x)) is exactly the same number value as x.
As noted, the least significant digit of s is not always
uniquely determined by the requirements listed in step 5.
The following specification for step 5 was considered, but
not adopted:
Author: christine@netscape.com
Date: 10 july 1997
*/
var SECTION = "9.8.1";
var VERSION = "ECMA_1";
startTest();
writeHeaderToLog( SECTION + " ToString applied to the Number type");
new TestCase( SECTION, "Number.NaN", "NaN", Number.NaN + "" );
new TestCase( SECTION, "0", "0", 0 + "" );
new TestCase( SECTION, "-0", "0", -0 + "" );
new TestCase( SECTION, "Number.POSITIVE_INFINITY", "Infinity", Number.POSITIVE_INFINITY + "" );
new TestCase( SECTION, "Number.NEGATIVE_INFINITY", "-Infinity", Number.NEGATIVE_INFINITY + "" );
new TestCase( SECTION, "-1", "-1", -1 + "" );
// cases in step 6: integers 1e21 > x >= 1 or -1 >= x > -1e21
new TestCase( SECTION, "1", "1", 1 + "" );
new TestCase( SECTION, "10", "10", 10 + "" );
new TestCase( SECTION, "100", "100", 100 + "" );
new TestCase( SECTION, "1000", "1000", 1000 + "" );
new TestCase( SECTION, "10000", "10000", 10000 + "" );
new TestCase( SECTION, "10000000000", "10000000000", 10000000000 + "" );
new TestCase( SECTION, "10000000000000000000", "10000000000000000000", 10000000000000000000 + "" );
new TestCase( SECTION, "100000000000000000000","100000000000000000000",100000000000000000000 + "" );
new TestCase( SECTION, "12345", "12345", 12345 + "" );
new TestCase( SECTION, "1234567890", "1234567890", 1234567890 + "" );
new TestCase( SECTION, "-1", "-1", -1 + "" );
new TestCase( SECTION, "-10", "-10", -10 + "" );
new TestCase( SECTION, "-100", "-100", -100 + "" );
new TestCase( SECTION, "-1000", "-1000", -1000 + "" );
new TestCase( SECTION, "-1000000000", "-1000000000", -1000000000 + "" );
new TestCase( SECTION, "-1000000000000000", "-1000000000000000", -1000000000000000 + "" );
new TestCase( SECTION, "-100000000000000000000", "-100000000000000000000", -100000000000000000000 + "" );
new TestCase( SECTION, "-1000000000000000000000", "-1e+21", -1000000000000000000000 + "" );
new TestCase( SECTION, "-12345", "-12345", -12345 + "" );
new TestCase( SECTION, "-1234567890", "-1234567890", -1234567890 + "" );
// cases in step 7: numbers with a fractional component, 1e21> x >1 or -1 > x > -1e21,
new TestCase( SECTION, "1.0000001", "1.0000001", 1.0000001 + "" );
// cases in step 8: fractions between 1 > x > -1, exclusive of 0 and -0
// cases in step 9: numbers with 1 significant digit >= 1e+21 or <= 1e-6
new TestCase( SECTION, "1000000000000000000000", "1e+21", 1000000000000000000000 + "" );
new TestCase( SECTION, "10000000000000000000000", "1e+22", 10000000000000000000000 + "" );
// cases in step 10: numbers with more than 1 significant digit >= 1e+21 or <= 1e-6
new TestCase( SECTION, "1.2345", "1.2345", String( 1.2345));
new TestCase( SECTION, "1.234567890", "1.23456789", String( 1.234567890 ));
new TestCase( SECTION, ".12345", "0.12345", String(.12345 ) );
new TestCase( SECTION, ".012345", "0.012345", String(.012345) );
new TestCase( SECTION, ".0012345", "0.0012345", String(.0012345) );
new TestCase( SECTION, ".00012345", "0.00012345", String(.00012345) );
new TestCase( SECTION, ".000012345", "0.000012345", String(.000012345) );
new TestCase( SECTION, ".0000012345", "0.0000012345", String(.0000012345) );
new TestCase( SECTION, ".00000012345", "1.2345e-7", String(.00000012345));
new TestCase( SECTION, "-1e21", "-1e+21", String(-1e21) );
test();
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