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馃悰 signal: fix dtype issues in some IIR functions - #2199

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jorenham merged 1 commit into
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gh-1851
Aug 15, 2026
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馃悰 signal: fix dtype issues in some IIR functions#2199
jorenham merged 1 commit into
masterfrom
gh-1851

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This return types in some cases with float32/complex64 for the following scipy.signal functions:

  • lp2hp_zpk
  • bilinear_zpk
  • iirfilter
  • butter
  • ellip
  • bessel

fixes #1851

@jorenham jorenham added this to the 1.18.1.0 milestone Aug 15, 2026
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jorenham merged commit 03f9ec2 into master Aug 15, 2026
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jorenham deleted the gh-1851 branch August 15, 2026 18:12
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signal: *_zpk should propagate float32 input, not promote to float64

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