function::fp_sqrt - Linux

Overview

fp_sqrt computes the square root of a double-precision floating-point number. It uses hardware instructions if available, providing fast and accurate results. This command is particularly useful in scientific and mathematical applications involving square root calculations.

Syntax

fp_sqrt NUMBER

Options/Flags

None

Examples

  • Compute the square root of 4:

    fp_sqrt 4

    Output: 2

  • Use fp_sqrt to find the hypotenuse of a triangle:

    cathetus_a=3
cathetus_b=4
hypotenuse=$(fp_sqrt $(fp_mul $cathetus_a $cathetus_a) $(fp_mul $cathetus_b $cathetus_b))
echo $hypotenuse

    Output: 5

Common Issues

  • Incorrect input: Ensure that the input number is a valid double-precision floating-point value.
  • Overflow: fp_sqrt may result in an overflow error if the input number is too large.

Integration

fp_sqrt can be integrated with other commands to perform advanced tasks:

  • Calculate the standard deviation of a dataset: 
    avg=$(echo "${dataset[@]}" | fp_sum)
fp_div $(fp_sqrt $(fp_sum $(for i in "${dataset[@]}"; do fp_mul $(fp_sub $i $avg) $(fp_sub $i $avg); done))) $(echo "${#dataset[@]}" - 1)

Related Commands

  • fp_mul: Multiplies two floating-point numbers.
  • fp_div: Divides two floating-point numbers.
  • bc: A command-line calculator that handles floating-point arithmetic.