Defined in 2 files as a prototype:
- contrib/libstdc++/libmath/mathconf.h, line 138 (as a prototype)
- lib/msun/src/math.h, line 194 (as a prototype)
Defined in 2 files as a function:
- contrib/libstdc++/libmath/signbitl.c, line 35 (as a function)
- lib/msun/src/s_signbit.c, line 54 (as a function)