The functions described here perform trigonometric and other transcendental calculations. They generally produce floating-point answers correct to the full current precision. The H (Hyperbolic) and I (Inverse) flag keys must be used to get some of these functions from the keyboard.
One miscellanous command is shift-P (calc-pi), which pushes
the value of @c{$\pi$}
pi (at the current precision) onto the stack. With the
Hyperbolic flag, it pushes the value e, the base of natural logarithms.
With the Inverse flag, it pushes Euler's constant @c{$\gamma$}
gamma (about 0.5772). With both Inverse and Hyperbolic, it
pushes the "golden ratio" @c{$\phi$}
phi (about 1.618). (At present, Euler's constant is not available
to unlimited precision; Calc knows only the first 100 digits.)
In Symbolic mode, these commands push the
actual variables `pi', `e', `gamma', and `phi',
respectively, instead of their values; see section Symbolic Mode.
The Q (calc-sqrt) [sqrt] function is described elsewhere;
see section Basic Arithmetic. With the Inverse flag [sqr], this command
computes the square of the argument.
See section Numeric Prefix Arguments, for a discussion of the effect of numeric prefix arguments on commands in this chapter which do not otherwise interpret a prefix argument.