title: Any way to obtain square root of a number without using math.h and sqrt()?
body: <p>I've written a program for class that uses MPI to perform Fox's Block Matrix Multiplication method.  I was able to do this by using the sqrt() function in , but in order to compile the program I'm having to type in "mpicc -lm -o ...".  Instructions for the hw state to compile the program using "mpicc -o ...", without the -lm.  I was just wondering whether there was a way to find the square root of a number (without having to write a separate program to do so).  If not, I'll just put the disclaimer in the comments at the top of my .txt file.  Thought this might be a good place to ask though.  Thanks!</p>