R.calc(Calculator)

R.calc is an electronic calculator with a function of “Normal Calculator” and the function of “Reverse Calculator”.

Function in a “Normal Calculator”:
- You can calculate including "Square root calculation" and "Exponentiation calculation" in the middle of a series of calculations.
- You can save the value of the electronic calculator.
Three sp1&sp2&sp3 buttons can save the value of the electronic calculator.
And you can paste the value that you saved when it is necessary.
Value that you saved is not lost when you turn off your smartphone.
And values that have been saved can be used in common with "Reverse Calculator".
- You can perform the correction of the input value with an arrow button or a tap.
- You can re-calculate the record was calculated just before, you can do so by modifying the value at that time.

A basic function of "Reverse Calculator" is a calculation by the calculating formula:
- Reverse calculation function
For example, you can be calculated, such as in the following example.
The calculation of the BMI (degree of corpulence) is “Weight÷（Height÷100）÷（Height÷100）”, but can write it as “Weight÷（Height÷100）＾2”. (Weight is kg , Height is cm)
Specifically, 75kg÷（170cm÷100）＾2 will be the BMI = 25.9515571.
If you want to know the weight of the case of 24 BMI, do the following.
Rewrite “75” to “?”, 75÷（170÷100）＾2 → ?÷（170÷100）＾2.
And “RUN” button, Answer ?=69.36, Body weight is 69.36kg.
- You can save a formula frequently used.
You name a calculating formula and can save it. (Or omit the name)
In addition, you save it with the number of the calculating formula as a memo and when you use it, you rewrite a memo to a number and can calculate.
Example: 75÷（170÷100）＾2＝BMI → Weight÷（Height÷100）＾2＝BMI
Value that you saved is not lost when you turn off your smartphone.
- Calculation log is saved RUN button is pressed.
You can re-calculated using the calculation log.
- The button of sp1&sp2&sp3 is shared with “Normal calculator”.