Getting min max for various types in Go
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package main | |
import ( | |
"fmt" | |
"math" | |
) | |
const( | |
MinUint uint = 0 // all zeroes | |
// Perform a bitwise NOT to change every bit from 0 to 1. | |
MaxUint = ^MinUint // all ones | |
// Shift the binary number to the right to get the high bit to zero | |
MaxInt = int(MaxUint >> 1) // all ones except high bit | |
MinInt = ^MaxInt // all zeroes except high bit. | |
) | |
func main() { | |
// integer max | |
fmt.Printf("max for int64 = %+v\n", math.MaxInt64) | |
fmt.Printf("max for int32 = %+v\n", math.MaxInt32) | |
fmt.Printf("max for int16 = %+v\n", math.MaxInt16) | |
fmt.Printf("max for int8 = %+v\n", math.MaxInt8) | |
// integer min | |
fmt.Printf("min for int64 = %+v\n", math.MinInt64) | |
fmt.Printf("min for int32 = %+v\n", math.MinInt32) | |
fmt.Printf("min for int16 = %+v\n", math.MinInt16) | |
fmt.Printf("min for int8 = %+v\n", math.MinInt8) | |
// Added parts that aren't in the video! | |
fmt.Printf("max float64 = %+v\n", math.MaxFloat64) | |
fmt.Printf("max float32 = %+v\n", math.MaxFloat32) | |
fmt.Printf("smallest nonzero float64 = %+v\n", math.SmallestNonzeroFloat64) | |
fmt.Printf("smallest nonzero float32 = %+v\n", math.SmallestNonzeroFloat32) | |
fmt.Printf("max uint = %+v\n", MaxUint) | |
fmt.Printf("min uint = %+v\n", MinUint) | |
fmt.Printf("max int = %+v\n", MaxInt) | |
fmt.Printf("min int = %+v\n", MinInt) | |
} |
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