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On 03/13/2015 03:29 AM, Rasmus Bo SÃrensen wrote: > Hi, > > I just started using the floating point functions of newlib on an > embedded multicore processor that we are developing at the Technical University of Denmark. > I am puzzled about the "#ifndef _REENT_ONLY" in line 125 of 'newlib/libc/include/math.h'. > Are the functions in lines 127 - 138 not meant to be reentrant? > And in this case what is it that makes them non-reentrant? Any math function which is required to set errno on failure is not necessarily reentrant (or rather, _REENT_ONLY is designed to protect setups where errno is global rather than thread-local). -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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