search for: ac_cv_search_log1p

Displaying 1 result from an estimated 1 matches for "ac_cv_search_log1p".

2003 Aug 25
0
(PR#3979) Re: Re: R 1.7.x and inaccurate log1p() on OpenBSD
...0; I only rarely have access to such systems. AH_TEMPLATE(HAVE_BROKEN_LOG1P, [Define if log1p() is broken.]) AH_TEMPLATE(HAVE_LOG1P, [Define if log1p() is available.]) ... AC_SEARCH_LIBS(log1p, [m], AC_DEFINE(HAVE_LOG1P)) ... dnl Check for broken log1p() implementations if test "$ac_cv_search_log1p" = "none required" then AC_MSG_CHECKING(for apparently-accurate log1p()) AC_TRY_RUN( [ #include <stdio.h> #include <math.h> int main(void) { int k; double d; double x; /* log(1+x) = x - (1/2)x^2 + (1/3)x^3 - (1/4)x^4 ... */ /* = x for x s...