test_float = ->
  run_test [

    "1.0+0",
    "1.0",

    "1+0.0",
    "1.0",

    "1+0.0-0.0",
    "1.0",

    "float(0)",
    "0.0",

    "1-float(0)",
    "1.0",

    "float(x)",
    "x",

    "float(1/2)",
    "0.5",

    "float(pi)",
    "3.141593...",

    "float(exp(1))",
    "2.718282...",

    "float(sin(2))",
    "0.909297...",

    "float(cos(2))",
    "-0.416147...",

    "x=[1/2,1/4]",
    "",

    "float(x)",
    "[0.5,0.25]",

    "x",
    "[1/2,1/4]",

    "x=quote(x)",
    "",

    "float((1+2*i)^(1/2))",
    "1.272020...+0.786151...*i",  

    "float((1+2*(-1)^(1/2))^(1/2))",
    "1.272020...+0.786151...*i",

    "float((-1)^(-0.666667+0.0291367/pi))",
    "-0.474559...-0.880224...*i",

    "abs(float((-1)^(-0.666667+0.0291367/pi)))",
    "1.0",

    # using float with an array
    "a = [2,3,4]",
    "",

    "float(a[1])",
    "2.0",

    "a=quote(a)",
    "",


  ]