frexpl of 1.0L should return the exponent 1 and mantissa 0.5L. Glibc does this. The substitute code in frexpl.c, however, returns the exponent 0 and mantissa 1.0L, which IMO is wrong.OK to fix this?
Ok for all. Don't even ask for approval of changes like the testsuite, since you're much more up-to-date than me about what gnulib now supports.
Paolo