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iio: bme680: Use DIV_ROUND_CLOSEST() instead of open-coding it

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Use DIV_ROUND_CLOSEST() instead of open-coding it. This documents intent
and makes it more clear what is going on for the casual reviewer.

Generated using the following the Coccinelle semantic patch.

// <smpl>
@r1@
expression x;
constant C1;
constant C2;
@@
 ((x) + C1) / C2

@script:python@
C1 << r1.C1;
C2 << r1.C2;
@@
try:
	if int(C1) * 2 != int(C2):
		cocci.include_match(False)
except:
	cocci.include_match(False)

@@
expression r1.x;
constant r1.C1;
constant r1.C2;
@@
-(((x) + C1) / C2)
+DIV_ROUND_CLOSEST(x, C2)
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20201227171126.28216-2-lars@metafoo.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Lars-Peter Clausen 2020-12-27 18:11:25 +01:00 committed by Jonathan Cameron
parent ed0ccf6d22
commit 166549bb1e
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/chemical/bme680_core.c
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@ -479,7 +479,7 @@ static u8 bme680_calc_heater_res(struct bme680_data *data, u16 temp)
var4 = (var3 / (calib->res_heat_range + 4)); var4 = (var3 / (calib->res_heat_range + 4));
var5 = 131 * calib->res_heat_val + 65536; var5 = 131 * calib->res_heat_val + 65536;
heatr_res_x100 = ((var4 / var5) - 250) * 34; heatr_res_x100 = ((var4 / var5) - 250) * 34;
heatr_res = (heatr_res_x100 + 50) / 100; heatr_res = DIV_ROUND_CLOSEST(heatr_res_x100, 100);
return heatr_res; return heatr_res;
} }