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random.h: Fix equation in comment of Weibull distro.

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2009-12-29  Edward Smith-Rowland  <3dw4rd@verizon.net>

	* include/bits/random.h: Fix equation in comment of Weibull distro.

From-SVN: r155515
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Edward Smith-Rowland 2009-12-30 02:08:23 +00:00 committed by Paolo Carlini
parent b6c524d03d
commit 53bc54ecc0
2 changed files with 6 additions and 2 deletions
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4
libstdc++-v3/ChangeLog
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@ -1,3 +1,7 @@
2009-12-29 Edward Smith-Rowland <3dw4rd@verizon.net>
* include/bits/random.h: Fix equation in comment of Weibull distro.
2009-12-29 Paolo Carlini <paolo.carlini@oracle.com>
* include/std/bitset (bitset<>::to_ullong, _M_do_to_ullong): Add.

4
libstdc++-v3/include/bits/random.h
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@ -3753,8 +3753,8 @@ namespace std
* @brief A weibull_distribution random number distribution.
*
* The formula for the normal probability density function is
* @f$ p(x|\alpha,\beta) = \frac{a}{b} (frac{x}{b})^{a-1}
* \exp{(-(frac{x}{b})^a)} @f$.
* @f$ p(x|\alpha,\beta) = \frac{\alpha}{\beta} (\frac{x}{\beta})^{\alpha-1}
* \exp{(-(\frac{x}{\beta})^\alpha)} @f$.
*/
template<typename _RealType = double>
class weibull_distribution