rcx

commit 049677860ea5914ab78224f9493374002d16c8cf
parent 857f48aa6b8543a5891d4cbcc2d8b4c5a1b9054b
Author: Robert Russell <robertrussell.72001@gmail.com>
Date:   Sun, 21 May 2023 16:01:02 -0700

Add documentation for mul64

Diffstat:
M
inc/bits.h
 | 
2
++

1 file changed, 2 insertions(+), 0 deletions(-)
diff --git a/inc/bits.h b/inc/bits.h
@@ -7,4 +7,6 @@ int r_popcnt_16(u16 n);
 int r_popcnt_32(u32 n);
 int r_popcnt_64(u64 n);
 
+/* Perform a full-width multiply of x and y, storing the upper (resp., lower)
+ * 64 bits of the product in *h (resp., *l). */
 void r_mul64(u64 *h, u64 *l, u64 x, u64 y);
 \ No newline at end of file