#Speedcrunch programer calculator install#

Once you install QTools, QCalc is located in the sub-directory qtools/bin/ and consists of a single file qcalc.tcl.

#Speedcrunch programer calculator download#

QCalc is included in the open source QTools Collection, which you cad freely download from SourceForge or GitHub. In all these cases, QCalc responds with the Error message and the explanation of the error: Error handlingĮxpressions that you enter into QCalc might have all kinds of errors: syntax errors, computation errors (e.g., division by zero), undefined variable errors, etc. Note: The names of user variables are case-sensitive. $GPIO_BASE + 0x400 – use the variable $GPIO_BASE in an expression =GPIO_BASE – define user variable GPIO_BASE and set it to $ans Here is example of defining and using variable $GPIO_BASE: Subsequently, you can use your alpha variable in expressions by typing $ alpha (note the dollar sign $ in front of the variable name). This will define the variable alpha and assign it the value of the last computation ( $ans). To set a variable, you simply type the expression =alpha in the user input field. QCalc allows you also to define any number of your own user variables. Log($ans)/log(2) – find log-base-2 of the last computation User variables Here are some examples of expressions with the $ans variable:ġ/$ans – find the inverse of the last computation QCalc stores the result of the last computation in the $ans variable (note the dollar sign $ in front of the variable name). You can recall and navigate the history of previously entered expressions by pressing the Up / Down keys. QCalc remembers the history of up to 8 most recently entered expressions. Here are a few examples of such expressions: These binary constants are represented as $0000, $0001, $0010,…, $1110, and $1111 and can be mixed into expressions. Binary constantsĪs the extension to the C-syntax, QCalc supports binary numbers in the range from 0-15 (0b0000-0b1111). For better readability the hex display shows a comma between the two 16-bit half-words (e.g., 0xDEAD,BEEF). If the result of expression evaluation is integer (as opposed to floating point), QCalc automatically displays the result in hexadecimal and binary formats (see QCalc GUI). Automatic conversion to hexadecimal and binary Please refer to the documentation of the Tcl expr command for more details of supported syntax and features. NOTE: QCalc internally uses the Tcl command expr to evaluate the expressions. ($0111 & $GPIO_EXTIPINSELL_EXTIPINSEL0_MASK) << ($GPIO_EXTIPINSELL_EXTIPINSEL1_SHIFT * 12) – (see user-defined variables) Pow(sin($pi),2) + pow(cos($pi),2) – scientific floating-point calculations, pi-constant ((0xBEEF > 8) ^ 0xFFF0 – mixed binary, dec and hex numbers Some examples of acceptable expressions are: QCalc is also a powerful floating-point scientific calculator and supports all mathematical functions (sin(), cos(), tan(), exp(), ln(), …). Among others, the expressions can contain all bit-wise operators (>, |, &, ^, ~) as well as mixed decimal, hexadecimal and even binary constants.

The most important feature of QCalc is that it accepts expressions in the C-syntax – with the same operands and precedence rules as in the C or C++ source code.

#Speedcrunch programer calculator how to#

I begin with describing QCalc features and then I tell you how to download and launch it. But can your calculator accept complete expressions in the C-syntax, which you can cut-and-paste directly to and from your embedded code? How many buttons do you need to push to see your result in decimal, hex and binary? Well, QCalc can do this with less hassle than anything else I’ve seen out there. I’m sure that you already have your favorite calculator online or on your smartphone. Today, I’d like to start with my cross-platform Programmer’s Calculator called QCalc. In this blog, I’d like to share some of my tools with you. And these generally useful tools ended up in my Embedded Toolbox. Some of them proved to me more useful than others.

#Speedcrunch programer calculator software#

Like any craftsman, I have accumulated quite a few tools during my embedded software development career.