remove linkname for version >= 1.22

readme.md

@@ -1,5 +1,9 @@
 # fastrand
 
+> As of Go1.22, the fastrand is just a wrapper of `math/rand/v2`, please use the standard library instead.
+>
+> The fastrand is developed from the background that `math/rand` is unscalable. Because `math/rand` and `math/rand/v2` become scalable since Go1.22, there is no need to use this library.
+
 `fastrand` is the fastest pseudo-random number generator in Go. Support most common APIs of `math/rand`.
 
 This generator base on the Go runtime per-M structure, and the init-seed provided by the Go runtime, which means you can't add your seed, but these methods scale very well on multiple cores.

runtime_go122.go

@@ -4,14 +4,17 @@
 package fastrand
 
 import (
-	_ "unsafe"
+	"math/rand/v2"
 )
 
-//go:linkname runtimefastrand runtime.cheaprand
-func runtimefastrand() uint32
+func runtimefastrand() uint32 {
+	return rand.Uint32()
+}
 
-//go:linkname runtimefastrand64 runtime.cheaprand64
-func runtimefastrand64() uint64
+func runtimefastrand64() uint64 {
+	return rand.Uint64()
+}
 
-//go:linkname runtimefastrandu runtime.cheaprandu
-func runtimefastrandu() uint
+func runtimefastrandu() uint {
+	return uint(rand.Uint64())
+}