---
name: "bson_iter_double"
section: "3"
platform: "linux"
package: "libbson-doc"
version: "1.30.4-1+deb13u3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/bson_iter_double"
---

# bson\_iter\_double(3)

## SYNOPSIS

```
#define BSON_ITER_HOLDS_DOUBLE(iter) \
   (bson_iter_type ((iter)) == BSON_TYPE_DOUBLE)
double
bson_iter_double (const bson_iter_t *iter);
```

## PARAMETERS

- •

  **iter**: A *bson\_iter\_t*.

## DESCRIPTION

Fetches the contents of a BSON\_TYPE\_DOUBLE field.

## RETURNS

A double.

## AUTHOR

MongoDB, Inc

## COPYRIGHT

2009-present, MongoDB, Inc.