added: button sqrt() on the first tab

(there was not a function to it)



git-svn-id: svn://ttmath.org/publicrep/ttcalc/trunk@232 e52654a7-88a9-db11-a3e9-0013d4bc506e

CHANGELOG

@@ -1,14 +1,30 @@
-Version 0.9.0 prerelease (2009.10.18):
+Version 0.9.0 prerelease (2009.11.01):
     * fixed:   when 'C' button was pressed, the cursor was not put in the edit window
     * added:   Pad window - a multiline edit window
     * added:   Checking for update dialog box
+    * added:   there are some new buttons on the standard tab
+               - (...) - the whole expression is surrounded by brackets
+               - 1/(...)
+               - ;
+               - % - a new percentage operator
+               - floor/ceil/min/max/sqrt/root/gamma
+    * added:   some new options on display tab:
+               - grouping
+               - input decimal point
+               - parameters separated by
     * changed: precision:
                Medium - 512 mantissa,  64  exponent
                Big    - 1024 mantissa, 128 exponent
 
     Changes from TTMath 0.9.0 prerelease relating to TTCalc:
     * added:   operator percentage
-               e.g. 1000-50%=1000-(1000*0,5)=500
+               e.g. 1000-50% = 1000-(1000*0,5) = 500
+    * added:   function frac(x) - returns a value without the integer part
+               (only fraction remains)
+    * changed: algorithms in sqrt(x) and root(x ; n)
+               they were not too much accurate for some integers
+               e.g. Root(16;4) returned a value very closed to 2 but not exactly 2
+
 
 Version 0.8.7 prerelease (2009.09.16):
     * added:   new language: Swedish