# bson_iter_overwrite_double()

## Synopsis

    void
    bson_iter_overwrite_double (bson_iter_t *iter,
                                double       value);

## Parameters

iter | A bson_iter_t.
value | The new double value.

## Description

The bson_iter_overwrite_double() function shall overwrite the contents of a BSON_TYPE_DOUBLE element in place.

This may only be done when the underlying bson document allows mutation.

It is a programming error to call this function when iter is not obvserving an element of type BSON_TYPE_DOUBLE.