Top "Absolute-value" questions

Take the maximum in absolute value from different columns and filter out NaN Python

This was my try. For example df = pd.DataFrame({'a':[5,0,1,np.nan], 'b':[np.nan,1,4,3], 'c':[-3,-2,0,0]}) df.dropna(…

python pandas max nan absolute-value

abs() vs fabs() speed difference and advantage of fabs()

I ran some simple tests on abs() and fabs() functions and I don't understand what are the advantages of using …

python function absolute-value

Absolute value abs(x) using bitwise operators and Boolean logic

How does this work? The idea is to make abs(x) use bitwise operators for integers (assuming 32 bit words): y = …

c++ c bit-manipulation language-lawyer absolute-value

mongodb - Find document with closest integer value

Let's assume I have a collection with documents with a ratio attribute that is a floating point number. {'ratio':1.437} How …

mongodb absolute-value

Is there a fast fabsf replacement for "float" in C++?

I'm just doing some benchmarking and found out that fabsf() is often like 10x slower than fabs(). So I disassembled …

c++ performance optimization absolute-value