Research on quadruple precision operation usable for scientific computation

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Application of quadruple precision numerical routines which was developed, evaluated and optimized through this research, we had computed Brun's constant up to 9-th digit following decimal point. Newly found number is not know until the completion of the Brun's number. Papers on this topic were prepared and submitted for the publication. Here, Brun's constant is the constant computed by the sum of(1/p+1/(p+2)) where p(>=2) and p+2 is prime numbers.