as: WebAssembly-Signatures

 
 9.51.2.3 Signatures
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 Function signatures are specified with the 'signature' pseudo-opcode,
 followed by a simple function signature imitating a C++-mangled function
 type: 'F' followed by an optional 'v', then a sequence of 'i', 'l', 'f',
 and 'd' characters to mark i32, i64, f32, and f64 parameters,
 respectively; followed by a final 'E' to mark the end of the function
 signature.