HelenOS sources

__signbit          82 uspace/lib/c/include/math.h int __signbit(size_t, ...);
__signbit         124 uspace/lib/c/include/math.h #define signbit(x)     __signbit(sizeof(x), (x))
__signbit          82 uspace/lib/posix/include/libc/math.h int __signbit(size_t, ...);
__signbit         124 uspace/lib/posix/include/libc/math.h #define signbit(x)     __signbit(sizeof(x), (x))