# BSON::Double - phpMan

## NAME
    [BSON::Double] - BSON type wrapper for Double

## VERSION
    version v1.12.2

## SYNOPSIS
        use [BSON::Types] ':all';

        my $bytes = bson_double( $number );

## DESCRIPTION
    This module provides a BSON type wrapper for a numeric value that would
    be represented in BSON as a double.

## ATTRIBUTES
  value
    A numeric scalar (or the special strings "Inf", "-Inf" or "NaN"). This
    will be coerced to Perl's numeric type. The default is 0.0.

## METHODS
  TO_JSON
    Returns a double.

    If the "BSON_EXTJSON" environment variable is true and the
    "BSON_EXTJSON_RELAXED" environment variable is false, returns a hashref
    compatible with MongoDB's extended JSON
    <<https://github.com/mongodb/specifications/blob/master/source/extended-j>
    son.rst> format, which represents it as a document as follows:

        {"$numberDouble" : "42.0"}

    If "BSON_EXTJSON" is false and the value is 'Inf', '-Inf' or 'NaN'
    (which are illegal in regular JSON), then an exception is thrown.

## INFINITY AND NAN
    Some Perls may not support converting "Inf" or "NaN" strings to their
    double equivalent. They are available as functions from the POSIX
    module, but as a lighter alternative to POSIX, the following functions
    are available:

    *   [BSON::Double::pInf]() – positive infinity

    *   [BSON::Double::nInf]() – negative infinity

    *   [BSON::Double::NaN]() – not-a-number

## OVERLOADING
    The numification operator, "0+" is overloaded to return the "value", the
    full "minimal set" of overloaded operations is provided (per overload
    documentation) and fallback overloading is enabled.

## AUTHORS
    *   David Golden <<david@mongodb.com>>

    *   Stefan G. <<minimalist@lavabit.com>>

## COPYRIGHT AND LICENSE
    This software is Copyright (c) 2020 by Stefan G. and MongoDB, Inc.

    This is free software, licensed under:

      The Apache License, Version 2.0, January 2004