Linux/TDA2: float data exp optimization

i use expsp_i in SDK_VISION_03_02_00_00\ti_components\algorithms\mathlib_c66x_3_1_0_0\packages\ti\mathlib\src\expsp replace exp，but i think result is not similar .

Hi：Yordan
exp2sp is similar with exp ,,expsp and exp have big diffrence!
what is expsp and exp2sp mean?
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Hi Yordan
i compare expsp(a) and exp(a) , have some problem , some time is right but for negative is error.
follow is the print x2 x3 is input ahi and alo is expsp(x2 ) expsp(x3) ahi1 and alo1 is exp(x2) exp(x3) .
x2 = -0.013672, x3 = 0.005859, ahi = 0.986421, alo = 1.005877, ahi1 = 0.986421, alo1 = 1.005877
x2 = -0.423828, x3 = -0.275391, ahi = 0.574765, alo = 0.585481, ahi1 = 0.654536, alo1 = 0.759275
x2 = 0.112305, x3 = -0.017578, ahi = 1.118854, alo = 0.982575, ahi1 = 1.118854, alo1 = 0.982575
x2 = 0.125000, x3 = 0.017578, ahi = 1.133148, alo = 1.017734, ahi1 = 1.133148, alo1 = 1.017734
x2 = 0.107422, x3 = -0.223633, ahi = 1.113404, alo = 0.616583, ahi1 = 1.113404, alo1 = 0.799609
x2 = 0.026367, x3 = -0.041016, ahi = 1.026718, alo = 0.649917, ahi1 = 1.026718, alo1 = 0.959814
x2 = -0.368164, x3 = -0.253906, ahi = 0.533608, alo = 0.598196, ahi1 = 0.692004, alo1 = 0.775765
x2 = 0.138672, x3 = -0.015625, ahi = 1.148747, alo = 0.984496, ahi1 = 1.148747, alo1 = 0.984496
x2 = 0.125000, x3 = -0.011719, ahi = 1.133148, alo = 0.988350, ahi1 = 1.133148, alo1 = 0.988350
x2 = 0.099609, x3 = -0.235352, ahi = 1.104739, alo = 0.609399, ahi1 = 1.104739, alo1 = 0.790293
x2 = 0.056641, x3 = -0.033203, ahi = 1.058275, alo = 0.655014, ahi1 = 1.058275, alo1 = 0.967342
x2 = -0.150391, x3 = -0.248047, ahi = 0.582582, alo = 0.601712, ahi1 = 0.860372, alo1 = 0.780323
x2 = 0.133789, x3 = -0.013672, ahi = 1.143152, alo = 0.986421, ahi1 = 1.143152, alo1 = 0.986421
x2 = 0.091797, x3 = 0.013672, ahi = 1.096142, alo = 1.013766, ahi1 = 1.096142, alo1 = 1.013766
x2 = 0.057617, x3 = -0.174805, ahi = 1.059309, alo = 0.568531, ahi1 = 1.059309, alo1 = 0.839621
x2 = 0.162109, x3 = -0.076172, ahi = 1.032666, alo = 0.627465, ahi1 = 1.175989, alo1 = 0.926657
x2 = -0.052734, x3 = -0.372070, ahi = 0.642345, alo = 0.605297, ahi1 = 0.948632, alo1 = 0.689306
x2 = 0.110352, x3 = -0.056641, ahi = 1.116671, alo = 0.639841, ahi1 = 1.116671, alo1 = 0.944934
x2 = 0.087891, x3 = 0.039063, ahi = 1.091869, alo = 1.039835, ahi1 = 1.091869, alo1 = 1.039835
x2 = -0.005859, x3 = -0.186523, ahi = 0.994158, alo = 0.561907, ahi1 = 0.994158, alo1 = 0.829839
x2 = 0.176758, x3 = -0.078125, ahi = 1.047905, alo = 0.626241, ahi1 = 1.193342, alo1 = 0.924849
x2 = -0.077148, x3 = -0.339844, ahi = 0.626853, alo = 0.548936, ahi1 = 0.925752, alo1 = 0.711882
x2 = 0.157227, x3 = -0.104492, ahi = 1.027636, alo = 0.609944, ahi1 = 1.170261, alo1 = 0.900782
x2 = 0.101563, x3 = 0.013672, ahi = 1.106899, alo = 1.013766, ahi1 = 1.106899, alo1 = 1.013766
x2 = 0.108398, x3 = -0.165039, ahi = 1.114492, alo = 0.574110, ahi1 = 1.114492, alo1 = 0.847861
x2 = 0.120117, x3 = -0.087891, ahi = 1.127629, alo = 0.620155, ahi1 = 1.127629, alo1 = 0.915861
x2 = -0.093750, x3 = -0.291016, ahi = 0.616532, alo = 0.576404, ahi1 = 0.910510, alo1 = 0.747504
x2 = 0.135742, x3 = -0.132813, ahi = 1.145386, alo = 0.592913, ahi1 = 1.145387, alo1 = 0.875629
x2 = 0.101563, x3 = 0.011719, ahi = 1.106899, alo = 1.011788, ahi1 = 1.106899, alo1 = 1.011788
x2 = 0.182617, x3 = -0.096680, ahi = 1.054063, alo = 0.614728, ahi1 = 1.200355, alo1 = 0.907847
x2 = 0.114258, x3 = -0.059570, ahi = 1.121041, alo = 0.637969, ahi1 = 1.121041, alo1 = 0.942169
x2 = -0.082031, x3 = -0.249023, ahi = 0.623799, alo = 0.601124, ahi1 = 0.921243, alo1 = 0.779562
x2 = 0.140625, x3 = -0.090820, ahi = 1.150993, alo = 0.618341, ahi1 = 1.150993, alo1 = 0.913182
x2 = 0.095703, x3 = 0.008789, ahi = 1.100432, alo = 1.008828, ahi1 = 1.100432, alo1 = 1.008828
x2 = 0.138672, x3 = -0.102539, ahi = 1.148747, alo = 0.611137, ahi1 = 1.148747, alo1 = 0.902543
x2 = 0.101563, x3 = -0.064453, ahi = 1.106899, alo = 0.634862, ahi1 = 1.106899, alo1 = 0.937580
x2 = -0.080078, x3 = -0.192383, ahi = 0.625019, alo = 0.558624, ahi1 = 0.923044, alo1 = 0.824991
x2 = 0.166016, x3 = -0.053711, ahi = 1.036708, alo = 0.641718, ahi1 = 1.180592, alo1 = 0.947706
x2 = 0.085938, x3 = 0.007813, ahi = 1.089738, alo = 1.007843, ahi1 = 1.089738, alo1 = 1.007843
x2 = 0.104492, x3 = -0.099609, ahi = 1.110147, alo = 0.612930, ahi1 = 1.110147, alo1 = 0.905191
x2 = 0.116211, x3 = -0.053711, ahi = 1.123233, alo = 0.641718, ahi1 = 1.123233, alo1 = 0.947706
x2 = -0.046875, x3 = -0.181641, ahi = 0.646120, alo = 0.564658, ahi1 = 0.954207, alo1 = 0.833901
x2 = 0.145508, x3 = -0.041016, ahi = 1.156627, alo = 0.649917, ahi1 = 1.156627, alo1 = 0.959814
x2 = 0.079102, x3 = 0.028320, ahi = 1.082314, alo = 1.028725, ahi1 = 1.082314, alo1 = 1.028725
x2 = 0.079102, x3 = -0.081055, ahi = 1.082314, alo = 0.624409, ahi1 = 1.082314, alo1 = 0.922143
x2 = 0.160156, x3 = -0.060547, ahi = 1.030651, alo = 0.637346, ahi1 = 1.173694, alo1 = 0.941250
x2 = 0.015625, x3 = -0.269531, ahi = 1.015748, alo = 0.588922, ahi1 = 1.015748, alo1 = 0.763737
x2 = 0.179688, x3 = -0.074219, ahi = 1.050979, alo = 0.628692, ahi1 = 1.196843, alo1 = 0.928469
x2 = 0.122070, x3 = 0.019531, ahi = 1.129833, alo = 1.019723, ahi1 = 1.129834, alo1 = 1.019723
x2 = 0.087891, x3 = -0.110352, ahi = 1.091869, alo = 0.606381, ahi1 = 1.091869, alo1 = 0.895519
x2 = 0.185547, x3 = -0.065430, ahi = 1.057155, alo = 0.634242, ahi1 = 1.203877, alo1 = 0.936665
x2 = 0.039063, x3 = -0.328125, ahi = 1.039835, alo = 0.555406, ahi1 = 1.039835, alo1 = 0.720273
x2 = 0.228516, x3 = -0.111328, ahi = 1.103570, alo = 0.605789, ahi1 = 1.256733, alo1 = 0.894645
x2 = 0.158203, x3 = 0.007813, ahi = 1.028641, alo = 1.007843, ahi1 = 1.171404, alo1 = 1.007843
x2 = 0.106445, x3 = -0.157227, ahi = 1.112317, alo = 0.578613, ahi1 = 1.112317, alo1 = 0.854510
x2 = 0.168945, x3 = -0.075195, ahi = 1.039750, alo = 0.628078, ahi1 = 1.184055, alo1 = 0.927562
x2 = 0.006836, x3 = -0.348633, ahi = 1.006859, alo = 0.544132, ahi1 = 1.006859, alo1 = 0.705652
x2 = 0.213867, x3 = -0.116211, ahi = 1.087522, alo = 0.602838, ahi1 = 1.238458, alo1 = 0.890287

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