HelenOS sources

isless             76 uspace/lib/math/generic/__fcompare.c 		if (isless(val1, val2))
isless             51 uspace/lib/math/generic/nearbyint.c 	if (isless(val, 1.5f))
isless            101 uspace/lib/math/generic/nearbyint.c 	if (isless(val, 1.5))
HelenOS homepage, sources at GitHub