num_sfun.c:286: error: conflicting types for ‘number_atan2’
num_sfun.c:222: error: previous implicit declaration of ‘number_atan2’ was here
num_sfun.c:350: error: conflicting types for ‘number_sin’
num_sfun.c:76: error: previous implicit declaration of ‘number_sin’ was here
num_sfun.c:397: error: conflicting types for ‘number_cos’
num_sfun.c:74: error: previous implicit declaration of ‘number_cos’ was here
make[1]: *** [num_sfun.o] Error 1
make[1]: Leaving directory `/home/calvin/Desktop/gcl-2.6.6/o'
make: *** [unixport/saved_pre_gcl] Error 2