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-rw-r--r--internal/bignum.h1
-rw-r--r--numeric.c2
2 files changed, 1 insertions, 2 deletions
diff --git a/internal/bignum.h b/internal/bignum.h
index 95c1e6eacd..aaada45ed8 100644
--- a/internal/bignum.h
+++ b/internal/bignum.h
@@ -131,6 +131,7 @@ VALUE rb_big_ge(VALUE x, VALUE y);
VALUE rb_big_lt(VALUE x, VALUE y);
VALUE rb_big_le(VALUE x, VALUE y);
VALUE rb_int_powm(int const argc, VALUE * const argv, VALUE const num);
+VALUE rb_big_isqrt(VALUE n);
static inline bool BIGNUM_SIGN(VALUE b);
static inline bool BIGNUM_POSITIVE_P(VALUE b);
static inline bool BIGNUM_NEGATIVE_P(VALUE b);
diff --git a/numeric.c b/numeric.c
index 793f56551c..97fc239211 100644
--- a/numeric.c
+++ b/numeric.c
@@ -5269,8 +5269,6 @@ DEFINE_INT_SQRT(BDIGIT, rb_bdigit_dbl, BDIGIT_DBL)
#define domain_error(msg) \
rb_raise(rb_eMathDomainError, "Numerical argument is out of domain - " #msg)
-VALUE rb_big_isqrt(VALUE);
-
/*
* Document-method: Integer::sqrt
* call-seq: