Dimitri Lozeve
9a1d251716
Fixes https://github.com/dlozeve/bqn-npy/issues/1. The spec says that •bit._cast should support 32-bit uints [1], but CBQN does not [2]. To get around this, we just use signed integers, which works for numbers smaller than 2^31. Above that, it will wrap around and (probably) fail, but CBQN does not support them anyway (except by converting them to doubles). From Marshall: > All of the provided functions at this time are identical on i32 and > u32, because they work (mod 2^32) and the only difference between > those formats is to add or subtract 2^32 from numbers outside the > range [0,2^31). > If you want to run on u32s stored directly as numbers in BQN (they > won't fit in i32 and will be stored as double!) you can •bit._cast > those into a signed format at the beginning and then back out at the > end. [1] https://mlochbaum.github.io/BQN/spec/system.html#bitwise-operations [2] https://matrix.to/#/!EjsgbQQNuTfHXQoiax:matrix.org/$PL2AYNlLQuYhPftdt7yw7rW9heiVEEeATte2zOt2BYk
18 lines
356 B
Python
18 lines
356 B
Python
# /// script
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# dependencies = ["numpy"]
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# ///
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import numpy as np
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def main():
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for endianness in "<>":
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for typ in "fiu":
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for size in "48":
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dtype = endianness + typ + size
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arr = np.zeros((2, 3, 4), dtype=dtype)
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np.save(f"test{dtype}.npy", arr)
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if __name__ == "__main__":
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main()
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