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50 lines
839 B
50 lines
839 B
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// simple exaple of QD usage to illustrate linking process
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// Alex Kaiser, LBNL, 6/3/2010
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#include <iostream>
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#include <qd/qd_real.h>
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#include <qd/fpu.h>
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using namespace std;
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int main() {
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// ensure that 80-bit arithmetic is not in place
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// this call forces 64-bit arithmetic
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unsigned int old_cw;
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fpu_fix_start(&old_cw);
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cout.precision(60);
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// simple read example
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/*
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qd_real readTest ;
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cin >> readTest ;
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cout << "readTest = " << readTest << endl ;
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*/
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// simple demo
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qd_real x = "1.0" ;
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x /= 3.0 ;
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qd_real y ;
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y = pow( qd_real(2.0) , 3 ) ;
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cout << "y = " << y << endl;
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cout << "x = " << x << endl;
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qd_real a ;
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qd_real b = qd_real("0.1");
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a = sqrt(b);
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cout << " sqrt(0.1) = " << a << endl;
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cout << " sqrt(0.1) * sqrt(0.1) = " << a * a << endl;
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fpu_fix_end(&old_cw);
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return 0;
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}
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