wrsamp: IndexError: Channel 0 contains values outside the allowed range [-32768, 32767] for fmt 16

We're encountering an issue when trying to write data to WFDB files using the wrsamp function. Specifically, we’re seeing an error that prevents us from writing the files correctly. When attempting to call wrsamp to save our data, we receive the following error message:

IndexError: Channel 0 contains values outside the allowed range [-32768, 32767] for fmt 16.

To investigate the issue further, we modified the WFDB source code to provide additional debugging information. The csv file we’re attempting to convert to wfdb has values ranging between:

Minimum: -90.113269
Maximum: 622.269327

But this is being scaled to -32767 and 32772 after calling wrsamp, so the max value allowed in fmt 16 is being exceeded.

We are using package versions:

Please see a screenshot below depicting the error we get using:
wfdb==4.1.2
pandas==2.2.3
numpy==2.1.2

We have a minimal reproducible sample that we sent to Ben Moody and Tom Pollard.

Start by reproducing the wrsamp call with the reported input range and inspect how values are scaled for fmt 16 before the range check. The payload does not name source files or tests; done means the described data can be written without producing values outside the allowed fmt 16 range, with regression coverage for the case.