# Ostermiller Basic and Scientific Calculator

Posted by dapj20 on May 28, 2021 in Tools

Scientific Expression or Formula Calculations. Twenty Transaction Memory and Tape, Different bases like Decimal and Octal, Logic Math, Functions, Constants. Screenshot above.

Deriving knowledge and inspiration from ostermiller.org. The GUI and Skin Modifications were done. This Scientific Calculator was ported with a new UI by delabs.**Live Gadget that you can Operate**

It has Brackets to build your own math equation. Scientific Functions like Trigonometric, Hyperbolic, Logarithmic.Memory (cookies), A Paper Trail or Tape for Equation and Result History

## Help Documentation

## Constants

ans |
The last calculated result |

PI |
pi = 3.14159265... |

E |
e = 2.71828182... |

LOG2E |
log of e base 2 |

LOG10E |
log of e base 10 |

LN2 |
log of 2 base e |

LN10 |
log of 10 base e |

SQRT2 |
square root of 2 |

SQRT1_2 |
square root of 1/2 |

## Functions

abs(a) |
the absolute value of a |

acos(a) |
arc cosine of a |

asin(a) |
arc sine of a |

atan(a) |
arc tangent of a |

atan2(a,b) |
arc tangent of a/b |

ceil(a) |
integer closest to a and not less than a |

cos(a) |
cosine of a |

exp(a) |
exponent of a |

floor(a) |
integer closest to and not greater than a |

log(a) |
log of a base e |

max(a,b) |
the maximum of a and b |

min(a,b) |
the minimum of a and b |

pow(a,b) |
a to the power b |

random() |
pseudorandom number in the range 0 to 1 |

round(a) |
integer closest to a |

sin(a) |
sine of a |

sqrt(a) |
square root of a |

tan(a) |
tangent of a |

delabs creations 2005