Scm_Abs           348 src/extlib.c        SCM_VECTOR_ELEMENT(v, 0) = Scm_Abs(num);
Scm_Abs          2152 src/gauche.h   SCM_EXTERN ScmObj Scm_Abs(ScmObj obj);
Scm_Abs           615 src/stdlib.c   SCM_RESULT = Scm_Abs(obj);