Scm_BignumToSI   2046 src/gauche.h   SCM_EXTERN long   Scm_BignumToSI(ScmBignum *b, int clamp, int* oor);
Scm_BignumToSI   2052 src/gauche.h   #define Scm_BignumToSI64       Scm_BignumToSI
Scm_BignumToSI    339 src/number.c           return Scm_BignumToSI(SCM_BIGNUM(obj), clamp, oor);