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config/output: correct refresh rate rounding error

This commit is contained in:
Ronan Pigott 2021-01-15 13:44:22 -07:00 committed by Simon Ser
parent 0d04864fd1
commit 915ba01ff1
1 changed files with 4 additions and 1 deletions
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5
sway/config/output.c
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@ -237,7 +237,10 @@ struct output_config *store_output_config(struct output_config *oc) {
static void set_mode(struct wlr_output *output, int width, int height,
float refresh_rate, bool custom) {
int mhz = (int)(refresh_rate * 1000);
// Not all floating point integers can be represented exactly
// as (int)(1000 * mHz / 1000.f)
// round() the result to avoid any error
int mhz = (int)round(refresh_rate * 1000);
if (wl_list_empty(&output->modes) || custom) {
sway_log(SWAY_DEBUG, "Assigning custom mode to %s", output->name);