Commit3e2d546

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Merge pull request#21275 from anntzer/fcdeps

Fix format_cursor_data for values close to float resolution.

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Original file line number	Diff line number	Diff line change
`@@ -2212,6 +2212,10 @@ def _g_sig_digits(value, delta):`
`2212`	`2212`	`Return the number of significant digits to %g-format value, assuming that`
`2213`	`2213`	`it is known with an error of delta.`
`2214`	`2214`	`"""`
	`2215`	`+ifdelta==0:`
	`2216`	`+# delta = 0 may occur when trying to format values over a tiny range;`
	`2217`	`+# in that case, replace it by the distance to the closest float.`
	`2218`	`+delta=np.spacing(value)`
`2215`	`2219`	`# If e.g. value = 45.67 and delta = 0.02, then we want to round to 2 digits`
`2216`	`2220`	`# after the decimal point (floor(log10(0.02)) = -2); 45.67 contributes 2`
`2217`	`2221`	`# digits before the decimal point (floor(log10(45.67)) + 1 = 2): the total`

Lines changed: 1 addition & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -341,6 +341,7 @@ def test_cursor_data():`
`341`	`341`	`([[10001,10000]],"[10001.000]"),`
`342`	`342`	`([[.123,.987]],"[0.123]"),`
`343`	`343`	`([[np.nan,1,2]],"[]"),`
	`344`	`+ ([[1,1+1e-15]],"[1.0000000000000000]"),`
`344`	`345`	`])`
`345`	`346`	`deftest_format_cursor_data(data,text):`
`346`	`347`	`frommatplotlib.backend_basesimportMouseEvent`

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