How to convert data to float in golang

Golang is a modern programming language that supports multiple data types, including Boolean types, integer types, floating point types, etc. In Golang, if we need to convert a data to a floating point type, we can use the conversion function to convert it to float32 or float64 type.

Taking float32 as an example, we can convert in the following ways:

1. Use forced type conversion

Forced type conversion is the most Simple method of converting data types. In Golang, we can use the following method to convert an integer to float32 type:

num := 123
f := float32(num)

Here we convert the integer type num into a float32 type variablef .

2. Use string conversion function

When we need to convert string type data into float32 type, we can use the strconv provided by Golang ParseFloat() function in the package. This function will convert the string to float64 type, we also need to convert it to float32 type.

str := "3.1415"
f64, _ := strconv.ParseFloat(str, 32)
f := float32(f64)

In the above code, we first convert the string type str into the float64 type, and then convert it into the float32 type variable f.

3. Use the data type conversion functions in the standard library

The standard library also provides some other data type conversion functions, such as float32() and float64() etc. These functions convert data types to corresponding floating-point variables. During the conversion process, truncation or rounding can occur if the ranges of the source and target types are incompatible.

To summarize, converting data types to floating-point variables is one of the very basic operations in Golang. In actual development, we need to choose different methods for conversion according to specific situations. I hope this article will be helpful for everyone to learn Golang's data type conversion.

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