1	# Host entropy
2	# ============
3	#
4	# The package's only host binding for randomness: entropy/native.c natively and
5	# entropy/webcrypto.js in JavaScript. generation.bend reads source words from
6	# it; trace_context.bend never does.
7	
8	import Base
9	
10	# One word from the host's cryptographic source: WebCrypto in JavaScript and
11	# the operating system's generator natively. Fail code 1 means unavailable and
12	# code 2 means source-failure in JavaScript; natively the code is the host
13	# errno with its strerror text. The pure codec never calls it implicitly.
14	def read_u32() -> IO(Result<&1, &1, U32 & String, U32>):
15	  import "./entropy/native.c"
16	  import "./entropy/webcrypto.js"