32 lines
532 B
C++
32 lines
532 B
C++
// Copyright 2007 Georgia Institute of Technology. All rights reserved.
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// ABSOLUTELY NOT FOR DISTRIBUTION
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/**
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* @file geometry.cc
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*
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* Implementation for geometry helpers.
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*/
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#include "geometry.h"
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#include "discrete.h"
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namespace math {
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double SphereVolume(double r, int d) {
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int n = d / 2;
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double val;
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DEBUG_ASSERT(d >= 0);
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if (d % 2 == 0) {
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val = pow(r * sqrt(PI), d)
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/ Factorial(n);
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} else {
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val = pow(2 * r, d) * pow(PI, n)
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* Factorial(n) / Factorial(d);
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}
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return val;
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}
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};
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