[R] Source code of rnorm, where can I find it?

[Waclaw Kusnierczyk]

On 02/02/2011 01:50 PM, Ista Zahn wrote:
>
> .Internal functions such as rnorm cannot be retrieved in this way as
> far as I know. You may have to download the source and find it
> direclty.

In this particular case you can find the implementation of rnorm with

     grep -rn --include=*.c '"rnorm"' .
     # ./src/main/names.c:449:{"rnorm",    do_random2, ...

     grep -rn --include=*.c 'do_random2(' .
     # ./src/main/random.c:131:SEXP attribute_hidden do_random2(SEXP 
call, SEXP op, SEXP args, SEXP rho)

Starting with line 131 in src/main/random.c you can follow the chain of 
macro executions and calls to see how rnorm is actually implemented.

vQ