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Change ParserBase to track floats independently from doubles

See original GitHub issue

It seems like in some cases, casting a double to a float may result in a slightly different answer than parsing the original number string using Float.parseFloat.

This code in ParserBase (jackson-core) may be contributing to an issue that @plokhotnyuk described with parsing 1.199999988079071 as a float.

    public float getFloatValue() throws IOException
        double value = getDoubleValue();
        /* 22-Jan-2009, tatu: Bounds/range checks would be tricky
         *   here, so let's not bother even trying...
        if (value < -Float.MAX_VALUE || value > MAX_FLOAT_D) {
            _reportError("Numeric value ("+getText()+") out of range of Java float");
        return (float) value;

From my testing, it seems that casting doubles to floats may not get the same result as parsing the text representation directly with Float.parseFloat(String).

Issue Analytics

  • State:closed
  • Created a year ago
  • Comments:6 (6 by maintainers)

github_iconTop GitHub Comments

pjfanningcommented, Apr 26, 2022

@cowtowncoder I added - it shows the issue that @plokhotnyuk reported. Would you be able to take a look?

cowtowncodercommented, Jun 20, 2022

I think this was indeed resolved via #757, closing.

Read more comments on GitHub >

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