Am 20. September 2020 16:41:56 MESZ schrieb "hans w. koch" hansw.koch@gmail.com:
yeah, this is consistent with my findings too… it just mystifies me, why writing the contents of [text] containing symbols to a .txt file and reloading converts them silently back to floats, perserving precision. seems like the .txt file format does some behind-the-scenes magic.
hmm, no. the behaviour you are seeing is exactly because [text] does NOT do any behind the scenes magic.
all the problems come from the fact that the default string-representation (and only the string-representation) of numbers is too coarse for double-precision.
mfg.hft.fsl IOhannes