HelenOS sources

isnormal          105 uspace/lib/c/include/math.h #define isnormal(x)    __builtin_isnormal(x)
isnormal          127 uspace/lib/c/include/math.h #define isnormal(x)    (fpclassify(x) == FP_NORMAL)
isnormal          105 uspace/lib/posix/include/libc/math.h #define isnormal(x)    __builtin_isnormal(x)
isnormal          127 uspace/lib/posix/include/libc/math.h #define isnormal(x)    (fpclassify(x) == FP_NORMAL)