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GMP

GNU Multiple Precision Arithmetic Library

Numerical instability로 고민하고 계시다면 GMP를 써보세요.

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설명서

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예제

#include <gmp.h> int main() { mpf_t fac; int i; mpf_init(fac); mpf_set_d(fac,(double) 1); for (i=1;i<40;i++) { mpf_mul_ui(fac, fac, (unsigned long) i); } gmp_printf("%.*Ff\n",40,fac); }
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