Minimalism-Calculator

This is a simple calculator program that allows variable definition, and supports many useful functions.

Use UP and DOWN to browse input history. Press ENTER to calculate result.

Use ';' to separate multiple expressions in a line.

Help Menu

Keymap

ENTER (calculate result)
UP_ARROW (previous input)
DOWN_ARROW (next input)

Variable names

Must start with a latin letter, and follows latin letters or numbers and underscores. Examples: a1, number_of_apples, alpha__.

Supported operators (in descending order of priority)

() (parenthesis)
!, +, - (logical_not, unary positive, unary negative)
^ (power)
*, /, % (multiply, divide, remainder)
+, - (plus, minus)
>, <, >=, <= (greater, less, greater equal, less equal)
==, != (equals, not equals)
& (logical_and)
| (logical_or)

Supported functions

sqrt() (square root)
root(x, n) (n-th root)
pow(x, y) (power: the same as x^y)
exp() (exponent)
gamma() (gamma function)
beta(a, b) (beta function)
factorial() (factorial function)
log() (natural logarithm)
log2() (logarithm base 2)
log10() (logarithm base 10)
sin() (sine)
cos() (cosine)
tan() (tangent)
asin() (inverse of sine)
acos() (inverse of cosine)
atan() (inverse of tangent)
sinh() (hyperbolic sine)
cosh() (hyperbolic cosine)
tanh() (hyperbolic tangent)

Probability related functions

UniformDistribution

runif() random sample from Uniform Distribution [0, 1)
runif(b) random sample from Beta Distribution [0, b)
runif(a, b) random sample from Beta Distribution [a, b)

BetaDistribution

pbeta(q, alpha, beta) distribution function of Beta Distribution
dbeta(x, alpha, beta) density function of Beta Distribution
qbeta(p, alpha, beta) inverse distribution function of Beta Distribution
rbeta(alpha, beta) random sample from Beta Distribution

GammaDistribution

pgamma(q, shape, scale) distribution function of Gamma Distribution
dgamma(x, shape, scale) density function of Gamma Distribution
qgamma(p, shape, scale) inverse distribution function of Gamma Distribution
rgamma(shape, scale) random sample from Gamma Distribution

NormalDistribution

pnorm(q) distribution function of Normal Distribution (0, 1)
dnorm(x) density function of Normal Distribution (0, 1)
qnorm(p) inverse distribution function of Normal Distribution (0, 1)
rnorm() random sample from Normal Distribution (0, 1)
pnorm(q, mean, sd) distribution function of Normal Distribution
dnorm(x, mean, sd) density function of Normal Distribution
qnorm(p, mean, sd) inverse distribution function of Normal Distribution
rnorm(mean, sd) random sample from Normal Distribution

BinomialDistribution

pbinom(q, trials, p) distribution function of Binomial Distribution
dbinom(x, trials, p) density function of Binomial Distribution
qbinom(p, trials, p) inverse distribution function of Binomial Distribution
rbinom(trials, p) random sample from Binomial Distribution

TDistribution

pt(q, degreeOfFreedom) distribution function of T Distribution
dt(x, degreeOfFreedom) density function of T Distribution
qt(p, degreeOfFreedom) inverse distribution function of T Distribution
rt(degreeOfFreedom) random sample from T Distribution

ChiSquaredDistribution

pchisq(q, degreeOfFreedom) distribution function of ChiSquared Distribution
dchisq(x, degreeOfFreedom) density function of ChiSquared Distribution
qchisq(p, degreeOfFreedom) inverse distribution function of ChiSquared Distribution
rchisq(degreeOfFreedom) random sample from ChiSquared Distribution

CauchyDistribution

pcauchy(q) distribution function of Cauchy Distribution with median = 0, scale = 1
dcauchy(x) density function of Cauchy Distribution with median = 0, scale = 1
qcauchy(p) inverse distribution function of Cauchy Distribution with median = 0, scale = 1
rcauchy() random sample from Cauchy Distribution with median = 0, scale = 1
pcauchy(q, median, scale) distribution function of Cauchy Distribution
dcauchy(x, median, scale) density function of Cauchy Distribution
qcauchy(p, median, scale) inverse distribution function of Cauchy Distribution
rcauchy(median, scale) random sample from Cauchy Distribution

ExponentialDistribution

pexp(q) distribution function of Exponential Distribution with mean = 1
dexp(x) density function of Exponential Distribution with mean = 1
qexp(p) inverse distribution function of Exponential Distribution with mean = 1
rexp() random sample from Exponential Distribution with mean = 1
pexp(q, mean) distribution function of Exponential Distribution
dexp(x, mean) density function of Exponential Distribution
qexp(p, mean) inverse distribution function of Exponential Distribution
rexp(mean) random sample from Exponential Distribution

FDistribution

pf(q, numeratorDegreeOfFreedom, denominatorDegreeOfFreedom) distribution function of F Distribution
df(x, numeratorDegreeOfFreedom, denominatorDegreeOfFreedom) density function of F Distribution
qf(p, numeratorDegreeOfFreedom, denominatorDegreeOfFreedom) inverse distribution function of F Distribution
rf(numeratorDegreeOfFreedom, denominatorDegreeOfFreedom) random sample from F Distribution

HypergeometricDistribution

phyper(q, populationSize, numberOfSuccesses, sampleSize) distribution function of Hypergeometric Distribution
dhyper(x, populationSize, numberOfSuccesses, sampleSize) density function of Hypergeometric Distribution
qhyper(p, populationSize, numberOfSuccesses, sampleSize) inverse distribution function of Hypergeometric Distribution
rhyper(populationSize, numberOfSuccesses, sampleSize) random sample from Hypergeometric Distribution

Predefined variables (can be reassigned if needed)

e = 3.141592653589793
pi = 2.718281828459045

Supported assignments

= normal assignment
+= add
-= subtract
*= multiply
/= divide
%= remainder
^= power

Other Notes

The smallest positive floating number is 1e-15. Any number with an absolute value smaller than 1e-15 is treated as 0. Any number with a difference smaller than 1e-15 are regarded as equal.

congyuwang / minimalism-calculator Goto Github PK