Shell floating point arithmetic tool BC

Shell floating point arithmetic tool BC

BC supports floating-point numbers, which is an advanced tool for mathematical operations.

[[Email protected] Desktop]# BC

BC 1.06

Copyright 1991-1994, 1997, 1998, Free Software Foundation, Inc.

This is the free software with absolutely NO WARRANTY.

For details type ' warranty '.

2+3

5

3.5*2.3

8.0

Ctrl+d exit

Of course, BC also supports many operators, such as/*-+. also supports variables, conditional comparison operators, logical operators, judgment statements, and loop statements.

A=1

while (a++<100)

Sum+=a

Sum

5049

1. Set the decimal precision, using the parameter scale.

[Email protected] Desktop]# echo "SCALE=5;3/21" | Bc

.14285

[Email protected] Desktop]# echo "SCALE=2;3/21" | Bc

.14

2. Binary conversion, using parameter Obase,ibase (indicating output, input using what binary)

[[Email protected] Desktop]# william=100;echo "obase=2; $william" | Bc

1100100

[[Email protected] Desktop]# william=100;echo "obase=10;ibase=2; $william" | Bc

4

[[Email protected] Desktop]# william=100;echo "obase=10;ibase=5; $william" | Bc

25

3. Calculate the square and root of the peace

[Email protected] Desktop]# echo "sqrt (100)" | Bc

10

[Email protected] Desktop]# echo "10^10" | Bc

10000000000

• This article is from: Linux Learning Network

Shell floating point arithmetic tool BC