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fix double precision problem

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This commit is contained in:
Chris Cromer 2019-01-16 12:22:02 -03:00
parent 346be0e9ac
commit a0d1af51c4
Signed by: cromer
GPG Key ID: 39CC813FF3C8708A
2 changed files with 4 additions and 1 deletions
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3
lib/misc.vala
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@ -55,7 +55,8 @@ namespace LibSernatur {
* @return Returns a string of the percentage * @return Returns a string of the percentage
*/ */
public static string format_double (double value) { public static string format_double (double value) {
return (value * 100).to_string () + "%"; // Remove the double precision by converting to float
return ((float) (value * (double) 100)).to_string () + "%";
} }
} }

2
test/percentage.vala
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@ -2,8 +2,10 @@ using LibSernatur.Misc;
void add_percentage_tests () { void add_percentage_tests () {
Test.add_func ("/sernatur/test/percentage", () => { Test.add_func ("/sernatur/test/percentage", () => {
assert (Percentage.format_float ((float) 0.07) == "7%");
assert (Percentage.format_float ((float) 0.43) == "43%"); assert (Percentage.format_float ((float) 0.43) == "43%");
assert (Percentage.format_float ((float) 1) == "100%"); assert (Percentage.format_float ((float) 1) == "100%");
assert (Percentage.format_double (0.07) == "7%");
assert (Percentage.format_double (0.43) == "43%"); assert (Percentage.format_double (0.43) == "43%");
assert (Percentage.format_double (1) == "100%"); assert (Percentage.format_double (1) == "100%");
}); });