Use proper libm power method for f64s
#3661
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For some reason when attempting to raise floats to powers in scoring we'd converted our `f64`s to `f32`s, called `libm::powf` (on no-std targets), then converted the result back to an `f64`. `libm::pow`, however, exists and raises `f64`s to a power natively. Here we correct this, using the proper `f64`-native `pow`. While I doubt its related, I went to look if we have any conversion in LDK itself in response to lightningdevkit/ldk-node#483 (where Android binaries failed to load due to a missing `__extenddftf2`.
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I've assigned @arik-so as a reviewer! |
arik-so
approved these changes
Mar 11, 2025
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👋 The first review has been submitted! Do you think this PR is ready for a second reviewer? If so, click here to assign a second reviewer. |
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✅ Added second reviewer: @valentinewallace |
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Honestly, this is trivial. |
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For some reason when attempting to raise floats to powers in scoring we'd converted our
f64s tof32s, calledlibm::powf(on no-std targets), then converted the result back to anf64.libm::pow, however, exists and raisesf64s to a power natively.Here we correct this, using the proper
f64-nativepow.While I doubt its related, I went to look if we have any conversion in LDK itself in response to
lightningdevkit/ldk-node#483 (where Android binaries failed to load due to a missing
__extenddftf2.