diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/float/float_format.py | 8 | ||||
| -rw-r--r-- | tests/float/float_format_ints_doubleprec.py | 3 | ||||
| -rw-r--r-- | tests/float/string_format_modulo.py | 5 |
3 files changed, 15 insertions, 1 deletions
diff --git a/tests/float/float_format.py b/tests/float/float_format.py index 4c8a21756..98ed0eb09 100644 --- a/tests/float/float_format.py +++ b/tests/float/float_format.py @@ -17,3 +17,11 @@ print("%.2e" % float("9" * 40 + "e-21")) # check a case that would render negative digit values, eg ")" characters # the string is converted back to a float to check for no illegal characters float("%.23e" % 1e-80) + +# Check a problem with malformed "e" format numbers on the edge of 1.0e-X. +for r in range(38): + s = "%.12e" % float("1e-" + str(r)) + # It may format as 1e-r, or 9.999...e-(r+1), both are OK. + # But formatting as 0.999...e-r is NOT ok. + if s[0] == "0": + print("FAIL:", s) diff --git a/tests/float/float_format_ints_doubleprec.py b/tests/float/float_format_ints_doubleprec.py index 57899d6d6..67101d3e4 100644 --- a/tests/float/float_format_ints_doubleprec.py +++ b/tests/float/float_format_ints_doubleprec.py @@ -13,3 +13,6 @@ v1 = 0x54B249AD2594C37D # 1e100 v2 = 0x6974E718D7D7625A # 1e200 print("{:.12e}".format(array.array("d", v1.to_bytes(8, sys.byteorder))[0])) print("{:.12e}".format(array.array("d", v2.to_bytes(8, sys.byteorder))[0])) + +for i in range(300): + print(float("1e" + str(i))) diff --git a/tests/float/string_format_modulo.py b/tests/float/string_format_modulo.py index 094461538..3c206b739 100644 --- a/tests/float/string_format_modulo.py +++ b/tests/float/string_format_modulo.py @@ -41,7 +41,10 @@ print(("%.40f" % 1e-300)[:2]) print(("%.40g" % 1e-1)[:2]) print(("%.40g" % 1e-2)[:2]) print(("%.40g" % 1e-3)[:2]) -print(("%.40g" % 1e-4)[:2]) +# Under Appveyor Release builds, 1e-4 was being formatted as 9.99999...e-5 +# instead of 0.0001. (Interestingly, it formatted correctly for the Debug +# build). Avoid the edge case. +print(("%.40g" % 1.1e-4)[:2]) print("%.0g" % 1) # 0 precision 'g' |