Forum Post: conversion of hex data to float inverse

I am trying to communicate a electric meter using rs485 and msp430g2553 microcontroller. The meter sends hex data, now i want to convert hex data into inverse float value. Is there any library function or function command to do that. For eg : Hex data is {0x43,0xCF,0x80,0x00} // inverse float value is 415.0 How to convert it into float value.