`hex.input_dec_uint`¶

dst[:n] = the unsigned decimal number read from input (mod 16^n).
Reads ASCII ‘0’..’9’ until a ‘\n’ or ‘\0’ (EOF) terminator; jumps to error on any other byte.

Signature¶

def input_dec_uint n, dst, error @ valid_lo, stopper, ok { ... }

Defined in hex/input.fj — lines 163–171 (view on GitHub).

Complexity¶

Time: ~ nd(10@+39) (d = number of digits)
Space: ~ n(9@+150)

See the complexity glossary for what @, w, dw, dbit, n mean.

Requires init¶

The following must be initialised before this macro is invoked:

hex.init

Source¶

Click to view the macro body

def input_dec_uint n, dst, error @ valid_lo, stopper, ok {
    .input_dec_uint_until n, dst, stopper
    .if_flags stopper+dw, 1<<0, error, valid_lo      // terminator high nibble must be 0
  valid_lo:
    .if_flags stopper, (1<<0x0)|(1<<0xA), error, ok  // low nibble 0 ('\0') or A ('\n')

  stopper: hex.vec 2
  ok:
}

Depends on¶

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