id summary reporter owner description type status milestone component version severity resolution keywords cc 12407 typos/bugs in arcsine CDF and support? maciej.swat@… John Maddock "Hi, I have two questions/corrections regarding the arcsine distribution. 1. On the website http://www.boost.org/doc/libs/1_61_0/libs/math/doc/html/math_toolkit/dist_ref/dists/arcine_dist.html in the main text, the formula for CDF contains a bug. Instead of F(x) = 2⋅arcsin(√((x-x_min)/(x_max - x))) / π it should be F(x) = 2⋅arcsin(√((x-x_min)/(x_max - x_min))) / π Note that the CDF is is correctly displayed in the 'Implementation' box F(x) = 2/π⋅sin-1(√(x - a) / (b - a) ) 2. Should the support be (0,1) instead of [0,1], see e.g. http://www.math.uah.edu/stat/special/Arcsine.html Best Regards, Maciej " Bugs closed To Be Determined math Boost 1.61.0 Cosmetic fixed arcsine distribution maciej.swat@… pbristow@…