remove unsused div_rem method from bignum

1 files changed, 0 insertions, 37 deletions

diff --git a/library/core/src/num/bignum.rs b/library/core/src/num/bignum.rs
index e33f58197bb..f21fe0b4438 100644
--- a/library/core/src/num/bignum.rs
+++ b/library/core/src/num/bignum.rs
@@ -335,43 +335,6 @@ macro_rules! define_bignum {
                 }
                 (self, borrow)
             }
-
-            /// Divide self by another bignum, overwriting `q` with the quotient and `r` with the
-            /// remainder.
-            pub fn div_rem(&self, d: &$name, q: &mut $name, r: &mut $name) {
-                // Stupid slow base-2 long division taken from
-                // https://en.wikipedia.org/wiki/Division_algorithm
-                // FIXME use a greater base ($ty) for the long division.
-                assert!(!d.is_zero());
-                let digitbits = <$ty>::BITS as usize;
-                for digit in &mut q.base[..] {
-                    *digit = 0;
-                }
-                for digit in &mut r.base[..] {
-                    *digit = 0;
-                }
-                r.size = d.size;
-                q.size = 1;
-                let mut q_is_zero = true;
-                let end = self.bit_length();
-                for i in (0..end).rev() {
-                    r.mul_pow2(1);
-                    r.base[0] |= self.get_bit(i) as $ty;
-                    if &*r >= d {
-                        r.sub(d);
-                        // Set bit `i` of q to 1.
-                        let digit_idx = i / digitbits;
-                        let bit_idx = i % digitbits;
-                        if q_is_zero {
-                            q.size = digit_idx + 1;
-                            q_is_zero = false;
-                        }
-                        q.base[digit_idx] |= 1 << bit_idx;
-                    }
-                }
-                debug_assert!(q.base[q.size..].iter().all(|&d| d == 0));
-                debug_assert!(r.base[r.size..].iter().all(|&d| d == 0));
-            }
         }
 
         impl crate::cmp::PartialEq for $name {