mirror of
https://github.com/lcn2/calc.git
synced 2025-08-16 01:03:29 +03:00
32 lines
631 B
Plaintext
32 lines
631 B
Plaintext
NAME
|
|
places - return number of decimal places
|
|
|
|
SYNOPSIS
|
|
places(x)
|
|
|
|
TYPES
|
|
x real
|
|
|
|
return integer
|
|
|
|
DESCRIPTION
|
|
If x has a finite decimal representation (with nonzero last digit),
|
|
places(x) returns the number of digits after the decimal point in this
|
|
representation; this is the least non-negative integer n for which
|
|
10^n * x is an integer.
|
|
|
|
If x does not have a finite decimal representation, places(x) returns -1.
|
|
|
|
EXAMPLE
|
|
> print places(3), places(0.0123), places(3.70), places(1e-10), places(3/7)
|
|
0 4 1 10 -1
|
|
|
|
LIMITS
|
|
none
|
|
|
|
LIBRARY
|
|
long qplaces(NUMBER *x)
|
|
|
|
SEE ALSO
|
|
digits
|