
Recent Posts
Recent Comments
 Gary M. Mugford on Date Range Class / Component added to ESBDevLib
 esbglenn on Date Range Class / Component added to ESBDevLib
 esbglenn on Date Range Class / Component added to ESBDevLib
 Gary M. Mugford on Date Range Class / Component added to ESBDevLib
 esbglenn on Our Date/Time Nonvisual Component in Delphi IDE
Archives
 February 2017
 September 2016
 December 2015
 November 2015
 October 2015
 September 2015
 May 2015
 April 2015
 March 2015
 February 2015
 January 2015
 September 2014
 June 2014
 April 2014
 March 2014
 January 2014
 December 2013
 November 2013
 September 2013
 August 2013
 July 2013
 June 2013
 May 2013
 April 2013
 March 2013
 February 2013
 January 2013
 December 2012
 November 2012
Categories
July 2020 S M T W T F S « Feb 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Meta
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
2 Comments
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
Leave a comment
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
Leave a comment
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