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Category Archives: Math in Delphi
Adding Large Integers and Floats to Delphi
I must admit one of my biggest disappointments with 64bit support in Delphi was the loss of the 80bit Extended (as it is now mapped to the 64bit Double). I’ve also always enjoyed (remember I did do a Maths Degree … Continue reading
Posted in Beta Development, Math in Delphi
Tagged 64bit, Big Floats, Big Integers, Math, XE4
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Improving Quartile Calculations in Delphi
Whilst the definition of Quartiles (see Wikipedia) is basically agreed upon, the calculation of the 1st and 3rd Quartiles is not – and it is tough to find even two Stats Packages that compute them the same way 🙁 Some, … Continue reading
Posted in Beta Development, Math in Delphi
Tagged Delphi, Nullable Types, Quartiles, Statistics, XE2, XE3, XE4, XE5
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Improved Statistics for Delphi by adding Null support
ESBPCS for VCL has quite a few Statistical Routines and Components – basically aimed to cover what you would do in a First Year University Course (for many years I taught 1st Year Stats to Bachelor of Commerce and MBA … Continue reading
Posted in Beta Development, Math in Delphi
Tagged Delphi, Descriptive Statistics, ESBPCS, Hypothesis Analysis, Linear Regression, Statistics, XE2, XE3, XE4, XE5
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Fraction Edits for Delphi + Special Discount
Further to the recent discussion on our new Fraction Type, TEDLFraction, we have also now completed the associated Fraction Edit for VCL – this allows Fractions to be entered as Floats, Improper Fractions or Mixed Fraction, and then displayed as … Continue reading
Much improved Fractions
With the rewrite / redesign of ESBPCS for VCL into ESBDevLib for VCL/FMX, we have been looking at ways to better use new features. Currently we are aiming at Delphi XE2 and above – though we may make the FMX … Continue reading
Mathematical “mod” versus Delphi “mod”.
Last week I discovered that I had “assumed” that the mod operator in Delphi was the same as the mod operator that I’ve always used in Mathematics. For most of the algorithms I use, I am dealing with Positive Integers … Continue reading