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</noinclude><includeonly>{{#if:{{{number|}}}|{{#ifeq:{{{number}}}|{{evalns|{{{number}}}}}|true|{{#ifeq:{{{number}}}|+{{evalns|{{{number}}}}}|true|{{#ifeq:{{{number}}}|({{evalns|{{{number}}}}})|true|false}}}}}}}}</includeonly
><noinclude{{documentation}}</noinclude >
▼ <noinclude>
{{pp-template|small=yes}}
==Purpose==
Determines whether something is valid in a certain context. Currently only implemented for determining if a number is within the precision that wikipedia expressions can handle.
==Returns==
'''true''' if the argument is valid, '''false''' if it is not.
==Examples==
:<code><nowiki>{{valid|number=A}}</nowiki></code> = {{valid|number=A}} ''(not a number)''
:<code><nowiki>{{valid|number=1234}}</nowiki></code> = {{valid|number=1234}}
:<code><nowiki>{{valid|number=+1234}}</nowiki></code> = {{valid|number=+1234}}
:<code><nowiki>{{valid|number=-1234}}</nowiki></code> = {{valid|number=-1234}}
:<code><nowiki>{{valid|number=(1234)}}</nowiki></code> = {{valid|number=(1234)}} ''(one pair of parenthesis is allowed)''
:<code><nowiki>{{valid|number=--1234}}</nowiki></code> = {{valid|number=--1234}} ''(incorrect sign use)''
:<code><nowiki>{{valid|number=1234567890}}</nowiki></code> = {{valid|number=1234567890}}
:<code><nowiki>{{valid|number=12345678901234567890}}</nowiki></code> = {{valid|number=12345678901234567890}} ''(too large)''
:<code><nowiki>{{valid|number=1.234567890}}</nowiki></code> = {{valid|number=1.234567890}}
:<code><nowiki>{{valid|number=1.2345678901234567890}}</nowiki></code> = {{valid|number=1.2345678901234567890}} ''(too many decimals)''
▲ </noinclude><includeonly>{{#if:{{{number|}}}|{{#ifeq:{{{number}}}|{{evalns|{{{number}}}}}|true|{{#ifeq:{{{number}}}|+{{evalns|{{{number}}}}}|true|{{#ifeq:{{{number}}}|({{evalns|{{{number}}}}})|true|false}}}}}}}}</includeonly>
