const golang.org/x/sys/unix.PTRACE_SETFPXREGS

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux_amd64.go#L230: 	PTRACE_SETFPXREGS                = 0x13

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)