DigitSum¶

Status: Stable

documented, exercised by the test suite and/or worked examples, with no known limitations recorded.

Description¶

DigitSum[n] gives the sum of the decimal digits of the integer n.

DigitSum[n, b] gives the sum of the base-b digits of n.

Notes

The sign of n is discarded; DigitSum\[0\] is 0.

Every input below was run against the current Mathilda build and its output recorded.

In[1]:= DigitSum[1234]
Out[1]= 10

In[2]:= DigitSum[255, 16]
Out[2]= 30

In[3]:= DigitSum[{1234, 0, 99}]
Out[3]= {10, 0, 18}

Attributes: Listable, NumericFunction, Protected.