---
name: "modbus_get_float"
section: "3"
platform: "linux"
package: "libmodbus-dev"
version: "3.1.6-2.1"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/modbus_get_float"
---

# modbus\_get\_float(3)

get a float value from 2 registers

## NAME

modbus\_get\_float - get a float value from 2 registers

## SYNOPSIS

**float modbus\_get\_float(const uint16\_t \****src***);**

Warning, this function is **deprecated** since libmodbus v3.2.0 and has been replaced by **modbus\_get\_float\_dcba()**.

## DESCRIPTION

The **modbus\_get\_float()** function shall get a float from 4 bytes in Modbus format (DCBA byte order). The *src* array must be a pointer on two 16 bits values, for example, if the first word is set to 0x4465 and the second to 0x229a, the float value will be 916.540649.

## RETURN VALUE

The function shall return a float.

## SEE ALSO

[**modbus\_set\_float**(3)](/modbus_set_float/3.md) [**modbus\_set\_float\_dcba**(3)](/modbus_set_float_dcba/3.md) [**modbus\_get\_float\_dcba**(3)](/modbus_get_float_dcba/3.md)

## AUTHORS

The libmodbus documentation was written by Stéphane Raimbault \<stephane.raimbault@gmail.com\>