(wrong string) ée

From: <git_AT_suckless.org>
Date: Sun, 6 Mar 2016 21:48:12 +0100 (CET)

commit b9ba3cb8db7ad2541ed923f8e80956f7230b2ac8
Author: Mattias Andrée <maandree_AT_kth.se>
AuthorDate: Sun Mar 6 21:48:04 2016 +0100
Commit: Mattias Andrée <maandree_AT_kth.se>
CommitDate: Sun Mar 6 21:48:04 2016 +0100

    A description of the Karatsuba algorithm
    
    Signed-off-by: Mattias Andrée <maandree_AT_kth.se>

diff --git a/src/zmul.c b/src/zmul.c
index 53e19f5..5b35d93 100644
--- a/src/zmul.c
+++ b/src/zmul.c
_AT_@ -7,6 +7,12 @@ zmul(z_t a, z_t b, z_t c)
 {
         /*
          * Karatsuba algorithm
+ *
+ * Basically, this how you were toughed to multiply large numbers
+ * by hand in school: 4010⋅3020 = (4000 + 10)(3000 + 20) =
+ = 40⋅30⋅10⁴ + (40⋅20 + 30⋅10)⋅10² + 10⋅20, but the middle is
+ * optimised to only one multiplication:
+ * 40⋅20 + 30⋅10 = (40 + 10)(30 + 20) − 40⋅30 − 10⋅20.
          */
 
         size_t m, m2;
Received on Sun Mar 06 2016 - 21:48:12 CET