On Sunday, 2 April 2017 at 05:33:31 UTC, rikki cattermole wrote:
On 02/04/2017 6:28 AM, Nicholas Wilson wrote:
[...]
BSR looks like its working.
http://x86.renejeschke.de/html/file_module_x86_id_20.html
http://stackoverflow.com/a/9353998
Ahh there's a subtraction involved. Many thanks!
On 02/04/2017 6:28 AM, Nicholas Wilson wrote:
I have this c++ code with clang
uint32_t val = 490560;
int leading_zeros = __builtin_clz( val << 1); // equals 0
int leading_ones = __builtin_clz(~val << 1); // equals 1
return (lz == 0 ? lo - 1 : -lz);
and want to translate it to D.
import
I have this c++ code with clang
uint32_t val = 490560;
int leading_zeros = __builtin_clz( val << 1); // equals 0
int leading_ones = __builtin_clz(~val << 1); // equals 1
return (lz == 0 ? lo - 1 : -lz);
and want to translate it to D.
import core.bitop : bsf,bsr;
uint val = 490560;
