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authorJeremiah <barrar@users.noreply.github.com>2017-05-14 04:07:05 +0200
committerJeremiah <barrar@users.noreply.github.com>2017-05-14 04:07:05 +0200
commit63d9698d5c7a088b2eb8220a9a44c8adbca86326 (patch)
tree163bed69e4f9f2467406aa52eefd684ab8bb4a84
parent37f6f92765513cd66c92178f48785d492eb06b89 (diff)
downloadqmk_firmware-63d9698d5c7a088b2eb8220a9a44c8adbca86326.tar.gz
qmk_firmware-63d9698d5c7a088b2eb8220a9a44c8adbca86326.tar.xz
faster and less bits... again
-rw-r--r--tmk_core/common/keyboard.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/tmk_core/common/keyboard.c b/tmk_core/common/keyboard.c
index d8b5dc403..fa17ffca2 100644
--- a/tmk_core/common/keyboard.c
+++ b/tmk_core/common/keyboard.c
@@ -74,20 +74,19 @@ static matrix_row_t get_real_keys(uint8_t row, matrix_row_t rowdata){
return out;
}
-
-static inline bool countones(matrix_row_t data)
+static inline bool countones(matrix_row_t row)
{
int count = 0;
- for (int col = 0; col < MATRIX_COLS; col++) {
- if (data & (1<<col)){
- count++;
- }
+ while (row > 0){
+ count += 1;
+ row &= row-1;
}
if (count > 1){
return true;
}
return false;
}
+
static inline bool has_ghost_in_row(uint8_t row, matrix_row_t rowdata)
{
rowdata = get_real_keys(row, rowdata);