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import py
from rpython.rlib.rdtoa import strtod, dtoa
from rpython.rlib import rfloat
def test_strtod():
assert strtod("12345") == 12345.0
assert strtod("1.1") == 1.1
assert strtod("3.47") == 3.47
assert strtod(".125") == .125
py.test.raises(ValueError, strtod, "123A")
py.test.raises(ValueError, strtod, "")
py.test.raises(ValueError, strtod, " ")
py.test.raises(ValueError, strtod, "\0")
py.test.raises(ValueError, strtod, "3\09")
def test_dtoa():
assert dtoa(3.47) == "3.47"
assert dtoa(1.1) == "1.1"
assert dtoa(-1.1) == "-1.1"
assert dtoa(1.1, flags=rfloat.DTSF_SIGN) == "+1.1"
assert dtoa(12.3577) == "12.3577"
assert dtoa(10.0) == "10"
assert dtoa(1.0e100) == "1e+100"
assert dtoa(rfloat.INFINITY) == 'inf'
assert dtoa(-rfloat.INFINITY) == '-inf'
assert dtoa(rfloat.NAN) == 'nan'
def test_dtoa_precision():
assert dtoa(1.1, code='f', precision=2) == "1.10"
assert dtoa(1e12, code='g', precision=12) == "1e+12"
def test_flag_cut_exp_0():
assert dtoa(1.1e9, code="g", precision=2, flags=rfloat.DTSF_CUT_EXP_0) == "1.1e+9"
assert dtoa(1.1e-9, code="g", precision=2, flags=rfloat.DTSF_CUT_EXP_0) == "1.1e-9"
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