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Diffstat (limited to 'src/c/elementaryFunctions/discrete_mathematics/lcm/u8lcma.c')
-rw-r--r-- | src/c/elementaryFunctions/discrete_mathematics/lcm/u8lcma.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/c/elementaryFunctions/discrete_mathematics/lcm/u8lcma.c b/src/c/elementaryFunctions/discrete_mathematics/lcm/u8lcma.c new file mode 100644 index 0000000..56856e4 --- /dev/null +++ b/src/c/elementaryFunctions/discrete_mathematics/lcm/u8lcma.c @@ -0,0 +1,68 @@ +/* Copyright (C) 2017 - IIT Bombay - FOSSEE + + This file must be used under the terms of the CeCILL. + This source file is licensed as described in the file COPYING, which + you should have received as part of this distribution. The terms + are also available at + http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt + Author: Ankit Raj + Organization: FOSSEE, IIT Bombay + Email: toolbox@scilab.in +*/ +#include<stdio.h> +/* This is the "lcm" function, accepting two inputs which are the array of integers + and second the size of the array. The algorithm works like this: + We take a temproary variable and store the lcm of the first two elements of the + array in it. Now using this temproary variable we recursively fin the lcm of + the whole array. + Now to fin the lcm of two elements we fin the maximum of the two elements and + check whether it is divisible by both the elements, if the condition is true we + get the lcm, else increase the maximum value by itself unless we get the lcm. +*/ +#include "lcm.h" +uint8 u8lcma(uint8* in,int size) +{ + long long int lcm_temp; + if(size==1) + { + lcm_temp=*in; + } + else + { + + int x1=*in; + int x2=*(in+1); + long long int max=(x1>x2)?x1:x2; + long long int i=max; + while(1) + { + if(i%x1==0 && i%x2==0) + { + lcm_temp=i; + break; + } + else + i+=max; + } + for(int j=2;j<size;j++) + { + x1=lcm_temp; + x2=*(in+j); + max=(x1>x2)?x1:x2; + i=max; + while(1) + { + if(i%x1==0 && i%x2==0) + { + lcm_temp=i; + break; + } + else + i+=max; + } + } + + } + return lcm_temp; +} + |