gcalc - graphical calculator

Overview of features available in gcalc v0.6.1

Arithmetic operations: +, -, x, /, % (remainder of division), ! (factorial)
Power operations: ^, R (square root), log (natural logarithm), lg, exp (calculating the exponent)
The change of sign: I(sign change to the opposite), |n| (module)
Trigonometric operations: sin, cos, tan, asin, acos, atan
Hyperbolic trigonometric operations: sinh, cosh, tanh
Rounding: R> (the big way), R< (down)
Decimal: , (puts a decimal point in a number)

TN1/TN2 - Switching to the first/second operand buffer
BR - Reading a number from the buffer
BW - Write number to buffer
C - Cancellation buffer
<x - Removes the rightmost digit from a number
SM - Switch from buffer mode to stack mode. For example, enter 2+2, enable stack mode, press =, 4 will appear, now if you continue to press =, 2 will be added to the result of the previous operation.
E, Pi - Calculate the corresponding numbers