Warn about non well-formed arguments in bcmath

Co-Authored-By: Nikita Popov <nikita.ppv@googlemail.com>
Co-Authored-By: Christoph M. Becker <cmbecker69@gmx.de>

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly used by Vim and Emacs editors
yet with recent changes the once working definitions don't work
anymore in Vim without custom plugins or additional configuration.
Neither are these settings synced across the PHP code base.

A simpler and better approach is EditorConfig and fixing code
using some code style fixing tools in the future instead.

This patch also removes the so called modelines for Vim. Modelines
allow Vim editor specifically to set some editor configuration such as
syntax highlighting, indentation style and tab width to be set in the
first line or the last 5 lines per file basis. Since the php test
files have syntax highlighting already set in most editors properly and
EditorConfig takes care of the indentation settings, this patch removes
these as well for the Vim 6.0 and newer versions.

With the removal of local variables for certain editors such as
Emacs and Vim, the footer is also probably not needed anymore when
creating extensions using ext_skel.php script.

Additionally, Vim modelines for setting php syntax and some editor
settings has been removed from some *.phpt files. All these are
mostly not relevant for phpt files neither work properly in the
middle of the file.

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Remove yearly range from copyright notice

Future-proof email addresses

Future-proof email addresses...

Fix some misspellings

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
use

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.

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year++

year++

year++

Move constants into read-only data segment

Don't reintroduce split_bc_num()

This function has been removed in 870ed5106d6274905b5aa4341429deef12c92e55,
because it is not necessary to manipulate the `bc_num` itself; instead
we

Don't reintroduce split_bc_num()

This function has been removed in 870ed5106d6274905b5aa4341429deef12c92e55,
because it is not necessary to manipulate the `bc_num` itself; instead
we simply omit extraneous decimals when converting the number to
string.

This resolves the issue introduced by 24fd49fbabc7c5ad941095f33d05fe2e41ff667d
in a cleaner way than 121d193514cbf59450a7dee0ad2e883101cbe9dd.

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Fixed build (missing function borrowed from PHP-7.2)

Scale support for bcmod()

As of commit 90dcbbe (PHP-7.2+) bcmod() supports non-integral
parameters as well. Since formerly only integer modulus has been
supported, it did not make mu

Scale support for bcmod()

As of commit 90dcbbe (PHP-7.2+) bcmod() supports non-integral
parameters as well. Since formerly only integer modulus has been
supported, it did not make much sense to cater to the scale with regard
to the result. However, now it does for consistency with other BCMath
operations.

Therefore, we add support for an optional `scale` parameter and fall
back to the default scale (`bcmath.scale`) as usual.

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Fixed bug #66364 (BCMath bcmul ignores scale parameter)

We change `bcmul()` and `bcpow()` so that the result has exactly the
requested scale (i.e. decimal places) to make them consistent

Fixed bug #66364 (BCMath bcmul ignores scale parameter)

We change `bcmul()` and `bcpow()` so that the result has exactly the
requested scale (i.e. decimal places) to make them consistent with the
other BCMath functions. This also changes our stance regarding bug
#52748, which had been classified as documentation problem.

We do not manipulate the numbers themselves (anymore), but rather
introduce `bc_num2str_ex()` which accepts a scale parameter that
overrides the scale of the number by omitting extraneous decimals and
adding zeros, respectively. This also allows us to get rid of
`split_bc_num()`, which fixes bug #75164 as well.

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Fix proto and indentation

Fix arginfo

The `scale` parameter is now optional.

Fixed bug #46564

bcmod() no longer truncates fractionals to integers. This matches
the behavior of fmod(). It also matches the behavior of bcpowmod().
It also matches the behavior of

Fixed bug #46564

bcmod() no longer truncates fractionals to integers. This matches
the behavior of fmod(). It also matches the behavior of bcpowmod().
It also matches the behavior of bcmod() in HHVM.

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Update copyright headers to 2017

Update copyright headers to 2017

Update copyright headers to 2017

Convert bcmath to new parameter parsing API

Use zend_string in bcmath params

fix merge

Fix bug #72093: bcpowmod accepts negative scale and corrupts _one_ definition

We can not modify result since it can be copy of _zero_ or _one_, etc. and
"copy" in bcmath is just bumping

Fix bug #72093: bcpowmod accepts negative scale and corrupts _one_ definition

We can not modify result since it can be copy of _zero_ or _one_, etc. and
"copy" in bcmath is just bumping the refcount.

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