certain float numbers get rounded

OrientDB Version, operating system, or hardware.

• v.2.1.19 (build 2.1.x@r71509d3123205ed8c61f115a5caa5ece4b87a192; 2016-06-01 12:15:51)
• v.2.1.21 (build 2.1.x@rd6619775543ef589bb487c9bd237fc703429d172; 2016-08-10 14:33:00)
• v.2.2.6 (build 2.2.x@r4b1cc998b36ca2ae21a1679938912a8f545a994a; 2016-07-27 15:34:14)

Operating System

• Linux
• MacOSX
• Windows
• Other Unix
• Other, name?

Expected behavior and actual behavior

running query select 3.193359375

EXPECTED: 3.193359375 ACTUAL: returned rounded number: 3.1933594 Tested via REST API, Orient DB studio UI, and python binary client pyorient ver. 1.5.4 - same result on all of them.

BUT if run query select 3.193359374 i get correct float in return: 3.193359374

Here is the list of my numbers (value_in, value_out) than i stored and gotten rounded values:

[(1.529296875, 1.5292969), (-36.2109375, -36.210938), (1.08984375, 1.0898438), (-80.68359375, -80.68359), (70.13671875, 70.13672), (-13.53515625, -13.535156), (-36.03515625, -36.035156), (80.68359375, 80.68359), (-3.33984375, -3.3398438), (1.041015625, 1.0410156), (-4.74609375, -4.7460938), (1.02734375, 1.0273438), (-75.05859375, -75.05859), (-43.41796875, -43.41797), (1.724609375, 1.7246094), (1.072265625, 1.0722656), (87.71484375, 87.71484), (1.595703125, 1.5957031), (53.7890625, 53.789062), (3.791015625, 3.7910156), (1.51953125, 1.5195312), (67.32421875, 67.32422), (-24.2578125, -24.257812), (-45.3515625, -45.351562), (-83.14453125, -83.14453), (4.634765625, 4.6347656), (-36.73828125, -36.73828), (1.576171875, 1.5761719), (-81.9140625, -81.91406), (1.533203125, 1.5332031), (1.70703125, 1.7070312), (1.732421875, 1.7324219), (-24.08203125, -24.082031), (-51.50390625, -51.503906), (1.716796875, 1.7167969), (-49.39453125, -49.39453), (1.04296875, 1.0429688), (1.044921875, 1.0449219), (1.052734375, 1.0527344), (-43.2421875, -43.242188), (67.67578125, 67.67578), (1.00390625, 1.0039062), (-10.72265625, -10.722656), (76.81640625, 76.81641), (-47.28515625, -47.285156), (45.17578125, 45.17578), (1.150390625, 1.1503906), (1.05078125, 1.0507812), (-18.45703125, -18.457031), (-9.31640625, -9.316406), (-85.25390625, -85.25391), (1.599609375, 1.5996094), (-31.81640625, -31.816406), (-72.0703125, -72.07031), (-14.94140625, -14.941406), (-27.0703125, -27.070312), (-42.71484375, -42.714844), (81.73828125, 81.73828), (54.31640625, 54.316406), (4.669921875, 4.669922), (1.15234375, 1.1523438), (-43.9453125, -43.945312), (-68.5546875, -68.55469), (-5.80078125, -5.8007812), (1.14453125, 1.1445312), (1.583984375, 1.5839844), (-7.91015625, -7.9101562), (3.228515625, 3.2285156), (1.525390625, 1.5253906), (-81.03515625, -81.03516), (1.54296875, 1.5429688), (-81.2109375, -81.21094), (4.658203125, 4.658203), (-44.6484375, -44.648438), (1.443359375, 1.4433594), (1.58984375, 1.5898438), (82.08984375, 82.08984), (1.728515625, 1.7285156), (1.03515625, 1.0351562), (-88.76953125, -88.76953), (45.3515625, 45.351562), (4.365234375, 4.3652344), (1.544921875, 1.5449219), (76.46484375, 76.46484), (-6.50390625, -6.5039062), (1.060546875, 1.0605469), (-82.6171875, -82.61719), (-51.6796875, -51.679688), (-78.3984375, -78.39844), (-25.6640625, -25.664062), (-42.5390625, -42.539062), (89.47265625, 89.47266), (4.67578125, 4.6757812), (1.548828125, 1.5488281), (-52.20703125, -52.20703), (4.060546875, 4.060547), (1.033203125, 1.0332031), (59.4140625, 59.414062), (-69.43359375, -69.43359), (-48.69140625, -48.691406), (-8.96484375, -8.964844), (-5.09765625, -5.0976562), (1.73046875, 1.7304688), (89.82421875, 89.82422), (-55.72265625, -55.722656), (-53.0859375, -53.085938), (-10.01953125, -10.019531), (53.61328125, 53.61328), (-71.54296875, -71.54297), (1.001953125, 1.0019531), (53.96484375, 53.964844), (1.55859375, 1.5585938), (72.0703125, 72.07031), (1.056640625, 1.0566406), (-46.0546875, -46.054688), (-25.48828125, -25.488281), (-16.5234375, -16.523438), (1.521484375, 1.5214844), (-34.27734375, -34.277344), (77.16796875, 77.16797), (1.72265625, 1.7226562), (1.41015625, 1.4101562), (-82.44140625, -82.44141), (-16.69921875, -16.699219), (1.541015625, 1.5410156), (1.05859375, 1.0585938), (1.53515625, 1.5351562), (1.064453125, 1.0644531), (1.71484375, 1.7148438), (-46.58203125, -46.58203), (1.07421875, 1.0742188), (66.4453125, 66.44531), (-44.47265625, -44.472656), (-80.5078125, -80.50781), (61.34765625, 61.347656), (67.1484375, 67.14844), (1.52734375, 1.5273438), (3.240234375, 3.2402344), (1.572265625, 1.5722656), (1.048828125, 1.0488281), (-44.82421875, -44.82422), (-16.34765625, -16.347656), (76.11328125, 76.11328), (-34.1015625, -34.101562), (1.60546875, 1.6054688), (63.80859375, 63.808594), (1.517578125, 1.5175781), (1.537109375, 1.5371094), (-76.81640625, -76.81641), (-81.38671875, -81.38672), (-41.66015625, -41.660156), (3.404296875, 3.4042969), (1.591796875, 1.5917969), (-34.98046875, -34.98047), (-24.43359375, -24.433594), (-15.29296875, -15.292969), (-4.39453125, -4.3945312), (-63.80859375, -63.808594), (-12.48046875, -12.480469), (-89.47265625, -89.47266), (4.16015625, 4.1601562), (1.57421875, 1.5742188), (1.556640625, 1.5566406), (1.58203125, 1.5820312), (89.6484375, 89.64844), (-20.7421875, -20.742188), (-6.15234375, -6.1523438), (-39.90234375, -39.902344), (81.38671875, 81.38672), (87.36328125, 87.36328), (-29.1796875, -29.179688), (-66.62109375, -66.62109), (-82.08984375, -82.08984), (4.623046875, 4.623047), (-15.64453125, -15.644531), (3.24609375, 3.2460938), (1.087890625, 1.0878906), (1.69921875, 1.6992188), (-54.66796875, -54.66797), (-51.85546875, -51.85547), (1.705078125, 1.7050781), (3.205078125, 3.2050781), (-79.62890625, -79.62891), (-36.38671875, -36.38672), (54.4921875, 54.492188), (3.22265625, 3.2226562), (1.607421875, 1.6074219), (1.708984375, 1.7089844), (-35.33203125, -35.33203), (-43.06640625, -43.066406), (1.552734375, 1.5527344), (-35.5078125, -35.507812), (88.9453125, 88.94531), (1.029296875, 1.0292969), (-15.99609375, -15.996094), (3.216796875, 3.2167969), (1.720703125, 1.7207031), (1.083984375, 1.0839844), (53.0859375, 53.085938), (-8.61328125, -8.613281), (4.611328125, 4.611328), (-72.24609375, -72.24609), (-87.01171875, -87.01172), (-27.59765625, -27.597656), (1.603515625, 1.6035156), (1.34765625, 1.3476562), (-23.37890625, -23.378906), (-11.77734375, -11.777344), (82.79296875, 82.79297), (1.587890625, 1.5878906), (-83.84765625, -83.84766), (44.6484375, 44.648438), (1.068359375, 1.0683594), (1.373046875, 1.3730469), (-13.88671875, -13.886719), (4.62890625, 4.6289062), (1.513671875, 1.5136719), (1.580078125, 1.5800781), (1.06640625, 1.0664062), (-7.55859375, -7.5585938), (84.90234375, 84.90234), (-32.87109375, -32.871094), (56.6015625, 56.601562), (1.025390625, 1.0253906), (1.59765625, 1.5976562), (-10.37109375, -10.371094), (-45.17578125, -45.17578), (-50.2734375, -50.273438), (4.65234375, 4.6523438), (-17.05078125, -17.050781), (44.82421875, 44.82422), (-74.70703125, -74.70703), (1.55078125, 1.5507812), (4.646484375, 4.6464844), (-13.18359375, -13.183594), (1.701171875, 1.7011719), (-35.68359375, -35.683594), (1.021484375, 1.0214844), (-31.2890625, -31.289062), (-41.1328125, -41.132812), (4.306640625, 4.3066406), (69.43359375, 69.43359), (3.193359375, 3.1933594), (88.76953125, 88.76953), (1.037109375, 1.0371094), (-88.41796875, -88.41797), (-52.3828125, -52.382812), (-89.82421875, -89.82422), (1.712890625, 1.7128906), (-77.6953125, -77.69531), (1.01953125, 1.0195312)]

[almibe]

Hey I just stumbled on this so sorry if I’m mistaken, but you might be making a very common mistake using Float.MIN_VALUE. It actually isn’t the lowest negative number a Float can hold, it is the smallest positive value a Float can hold. To get the lowest negative number I think you just have to do (Float.MAX_VALUE * -1). I remember running into that before and I think that’s the solution.

[kived]

@almibe Nice catch! Given the purpose here (to ensure that the data is stored with the most appropriate type), the test should probably use the absolute value of dou.