1 1 9.52.2.3 Signatures 1 ................... 1 1 Function signatures are specified with the 'signature' pseudo-opcode, 1 followed by a simple function signature imitating a C++-mangled function 1 type: 'F' followed by an optional 'v', then a sequence of 'i', 'l', 'f', 1 and 'd' characters to mark i32, i64, f32, and f64 parameters, 1 respectively; followed by a final 'E' to mark the end of the function 1 signature. 1