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Correct format gG precision handling #91

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Merged
ScottPJones merged 1 commit into from
Jul 18, 2025
Merged

Correct format gG precision handling #91

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12 changes: 7 additions & 5 deletions src/fmtcore.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -332,12 +332,14 @@ function _pfmt_e(out::IO, fs::FormatSpec, x::AbstractFloat)
end

function _pfmt_g(out::IO, fs::FormatSpec, x::AbstractFloat)
# number decomposition
ax = abs(x)
if 1.0e-4 <= ax < 1.0e6
_pfmt_f(out, fs, x)
# Branch according to the exponent
expnt = floor(Int, log10(abs(x)) )
if -4 <= expnt < fs.prec
newprec = fs.prec - expnt - 1
_pfmt_f(out, FormatSpec(fs ;prec=newprec), x)
else
_pfmt_e(out, fs, x)
newprec = fs.prec - 1
_pfmt_e(out, FormatSpec(fs ;prec=newprec), x)
end
end

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