[mul.c] don't call mpc_sqr any more when both inputs are the same variable

[mpc.texi,NEWS] document the above change


git-svn-id: svn://scm.gforge.inria.fr/svn/mpc/trunk@1139 211d60ee-9f03-0410-a15a-8952a2c7a4e4

1 files changed, 0 insertions, 6 deletions

diff --git a/src/mul.c b/src/mul.c
index ead0087..2be9b8d 100644
--- a/src/mul.c
+++ b/src/mul.c
@@ -623,12 +623,6 @@ mpc_mul (mpc_ptr a, mpc_srcptr b, mpc_srcptr c, mpc_rnd_t rnd)
    if (mpfr_zero_p (mpc_realref (c)))
       return mul_imag (a, b, c, rnd);
 
-   /* Check if b==c and call mpc_sqr in this case, to make sure            */
-   /* mpc_mul(a,b,b) behaves exactly like mpc_sqr(a,b) concerning          */
-   /* internal overflows etc.                                              */
-   if (mpc_cmp (b, c) == 0)
-      return mpc_sqr (a, b, rnd);
-
    /* If the real and imaginary part of one argument have a very different */
    /* exponent, it is not reasonable to use Karatsuba multiplication.      */
    if (   SAFE_ABS (mpfr_exp_t,