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Hello, Looking over the swap_tail macro in pnorm.c, the comment inside the code indicates it is to swap the values of '*cum' and '*ccum'. According to the code below that is taken from the source file, the swap functionality is dependent on what values are provided for 'x' and 'lower'. #define swap_tail \ if (x > 0.) {/* swap ccum <--> cum */ \ temp = *cum; if(lower) *cum = *ccu...

sorry for the late reply. i dunno if anyone ever wrote you back. although perhaps not written for clarity, i think what appears in the code is correct. the routine only guarantees that one of cum or ccum has a valid return value depending on i_tail (the other might as well be garbage, but that isn't what's returned). j On Wed, 9 Jul 2003 Henrik.Seidel@schering.de wrote: > Hello, > > I am a bit puzzled about the "swap_tail" macro in pnorm.c of the R sources. > I c...

Hello List I have just written a little function that takes two matrices as arguments and returns a large matrix that is composed of the two input matrices in upper-left position and lower-right position with a padding value everywhere else. (function definition and toy example below). I need nonsquare matrices and rowname() and colname() inherited appropriately. Two questions: (1) Is there a

--=-YFjXKq8/D/t1qWmIzQ9D Content-Type: text/plain Content-Transfer-Encoding: quoted-printable I was going over the source in src/nmath/pnorm.c and noticed a little bug in pnorm_both (in R 1.7.0). The else-if on line 205 covers the entire real line. Seems you want an &&, not an ||. Doesn't make a big difference (you still get a 0 or 1 from extreme starting values) but your log