> ## Documentation Index
> Fetch the complete documentation index at: https://docs.syntblaze.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Go uint32
`uint32` is a built-in unsigned integer type in Go that allocates exactly 32 bits (4 bytes) of memory. It represents non-negative whole numbers exclusively, utilizing all 32 bits for the magnitude of the value rather than reserving a most significant bit (MSB) for the sign.
## Technical Specifications
* **Memory Footprint:** 4 bytes (32 bits)
* **Minimum Value:** `0`
* **Maximum Value:** `4294967295` ($2^{32} - 1$)
* **Zero Value:** `0`
* **Package Math Constants:** `math.MaxUint32`
## Declaration and Initialization
Variables of type `uint32` can be declared using standard Go variable declaration syntax. If uninitialized, the compiler assigns the zero value.
```go theme={"dark"}
var a uint32 // Declared with zero value (0)
var b uint32 = 1000 // Explicit declaration and initialization
c := uint32(4294967295) // Short variable declaration with explicit type conversion
```
## Strict Typing and Conversion
Go enforces strict type safety. A `uint32` is a distinct type and is not implicitly interchangeable with `int`, `int32`, `uint`, or `uint64`, regardless of the underlying hardware architecture. Operations involving mixed numeric types require explicit type conversion.
```go theme={"dark"}
var x uint32 = 500
var y int32 = 500
// INVALID: invalid operation: x + y (mismatched types uint32 and int32)
// z := x + y
// VALID: explicit conversion aligns the types
z := x + uint32(y)
```
## Overflow and Underflow Mechanics
Go integers wrap around upon overflow or underflow. Because `uint32` is unsigned, decrementing below `0` wraps around to the maximum value, and incrementing above `math.MaxUint32` wraps around to `0`.
```go theme={"dark"}
package main
import (
"fmt"
"math"
)
func main() {
var max uint32 = math.MaxUint32
var min uint32 = 0
// Overflow: 4294967295 + 1
fmt.Println(max + 1) // Output: 0
// Underflow: 0 - 1
fmt.Println(min - 1) // Output: 4294967295
}
```
## Formatting Verbs
When using the `fmt` package, `uint32` values can be formatted using standard integer verbs to represent the data in different bases:
```go theme={"dark"}
var val uint32 = 255
fmt.Printf("%d\n", val) // Base 10: 255
fmt.Printf("%x\n", val) // Base 16 (hexadecimal): ff
fmt.Printf("%b\n", val) // Base 2 (binary): 11111111
```
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