User-defined functions for PCalc
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Financial 2.pcalcfunctions
Probability.pcalcfunctions
README.md
Weather.pcalcfunctions

README.md

pcalc-functions

A set of user-defined functions for PCalc. Email them to yourself, open the email on your iOS device, and you'll be able to import them into PCalc.

Financial 2

A simple set of functions for determining the time value of money:

Future Value

A coefficient for calculating the future value of an investment. To get the future value, you multiply this number by the present value.

  • Inputs
    • Y register: interest rate per compounding period
    • X register: number of compounding periods
  • Output
    • X register: the future value coefficient

Present Value

A coefficient for calculating the present value of an investment. To get the future value, you multiply this number by the future value.

  • Inputs
    • Y register: interest rate per compounding period
    • X register: number of compounding periods
  • Output
    • X register: the present value coefficient

Loan Payment

A coefficient for calculating the periodic payment of a loan. To get the payment amount, you multiply the initial principal by this coefficient.

  • Inputs
    • Y register: interest rate per period
    • X register: number of periods in the loan
  • Output
    • X register: the payment coefficient

Probability

A set of functions for probability distributions.

Std Normal PDF

The probability density function of a standard normal variable.

  • Input
    • X register: the value of the variable, x
  • Output
    • X register: the value of the standard normal PDF at x

Std Normal CDF

The cumulative density function of a standard normal variable.

  • Input
    • X register: the value of the variable, x
  • Output
    • X register: the value of the standard normal CDF at x

Inverse Std Normal CDF

The inverse cumulative density function of a standard normal variable.

  • Input
    • X register: the probability, p
  • Output
    • X register: the value of the variable, x, associated with p

Weather

Functions for determining the "feels like" temperature.

Wind Chill

The wind chill index for cold and windy days.

  • Inputs
    • Y register: the wind speed in mph
    • X register: the temperature in °F
  • Output
    • X register: the wind chill index, a "feels like" temperature in °F

Heat Index

The heat index for hot and humid days.

  • Inputs
    • Y register: the relative humidity in %
    • X register: the temperature in °F
  • Output
    • X register: the heat index, a "feels like" temperature in °F