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Fix Formatter.floatformat and Object.to_format (#1602)

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* fix: change float format specifier in Object.to_format

Fix the float format specifier in Object.to_format. If there is a float
stored in a Object such as 3.14, it would be printed out as 3 because
the format specifier is %d but should be %g.

* fix: print nan in floatformat

Fix floatformat to print 'nan' if float is nan. Currently,
io::printn(float.nan) will produce 'inf' instead of 'nan'.
This commit is contained in:
konimarti
2024-11-07 00:01:14 +01:00
committed by GitHub
parent 08d1b29301
commit b7a095b4b4
2 changed files with 2 additions and 2 deletions
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2
lib/std/collections/object.c3
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@@ -67,7 +67,7 @@ fn usz! Object.to_format(&self, Formatter* formatter) @dynamic
case UNSIGNED_INT:
return formatter.printf("%d", (uint128)self.i)!;
case FLOAT:
return formatter.printf("%d", self.f)!;
return formatter.printf("%g", self.f)!;
case ENUM:
return formatter.printf("%d", self.i)!;
default:

2
lib/std/io/formatter_private.c3
View File

@@ -214,7 +214,7 @@ fn usz! Formatter.floatformat(&self, FloatFormatting formatting, double y) @priv
// Add padding
if (!self.flags.left) len += self.pad(' ', self.width, 3 + pl)!;
String s = self.flags.uppercase ? "INF" : "inf";
if (y != y) s = self.flags.uppercase ? "NAN" : "nan";
if (math::is_nan(y)) s = self.flags.uppercase ? "NAN" : "nan";
len += s.len;
if (pl) len += self.out(is_neg ? '-' : '+')!;
len += self.out_chars(s)!;