Jeff Epler
d3fb6c96da
This function computes the remainder of a value `x` modulo pi/2, to high precision. It does this by dividing the flotaing point values into several ranges by magnitude, and applies successively slower but more accurate algorithms. The last two steps, one covering values up to around 2^7 * pi/2 (called "medium size") and a final one covering all possible float values, require big tables. By eliminating the "medium size" case, a table and some code are removed from the binary. This makes some cases take longer, but saves hundreds of bytes. It does _NOT_ affect the result, only the speed. ``` [desktop python] >>> sum(math.sin(2.**i) for i in range(21)) 1.4206898748939305 [trinket m0, before change to ef_rem_pio2.c] >>> sum(math.sin(2.**i) for i in range(21)) 1.42069 [trinket m0, after change to ef_rem_pio2.c] >>> sum(math.sin(2.**i) for i in range(21)) 1.42069 ``` |
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| .. | ||
| axtls@43a6e6bd3b | ||
| berkeley-db-1.xx@35aaec4418 | ||
| cmsis/inc | ||
| embed | ||
| libc | ||
| libffi@e9de7e35f2 | ||
| libm | ||
| libm_dbl | ||
| memzip | ||
| mp-readline | ||
| mp3@bc58a65496 | ||
| netutils | ||
| nrfutil@9e7dfb28a5 | ||
| oofatfs | ||
| protomatter@761d6437e8 | ||
| timeutils | ||
| tinytest | ||
| tinyusb@22100b252f | ||
| upytesthelper | ||
| utils | ||
| uzlib@f966da0fab | ||
| README.md | ||
This directory contains standard, low-level C libraries with emphasis on being independent and efficient. They can be used by any port.