* Marc Balmer <[EMAIL PROTECTED]> [080210 12:06]: > Jim Razmus wrote: >> I'm trying to compile a program that uses NAN. It includes math.h which >> I'm told C99 says should define it. I've grepped the entire source tree >> and read up on man 3 math and man 3 isinf. Still no joy. >> Trying to compile the program yields "error: `NAN' undeclared (first use >> in this function)". >> Can anyone point me in the right direction? > > you can use the isnan(3) function to test for NaN. Does that not work > in your program? >
The isnan test is not the issue. The program actually sets a variable to the value NAN. It's those lines that gak the compiler. The lines that fail are: sp->t_req = NAN; sp->t_resp = NAN; and the error during compilation is: gcc -DHAVE_CONFIG_H -I. -I../.. -I../../include -include config.h -DVARNISH_STATE_DIR='"/usr/local/var/varnish"' -g -O2 -MT varnishd-cache_center.o -MD -MP -MF .deps/varnishd-cache_center.Tpo -c -o varnishd-cache_center.o `test -f 'cache_center.c' || echo './'`cache_center.c cache_center.c: In function `cnt_done': cache_center.c:212: error: `NAN' undeclared (first use in this function) cache_center.c:212: error: (Each undeclared identifier is reported only once cache_center.c:212: error: for each function it appears in.) *** Error code 1 Hope that helps clear up my question. Jim
