suspect-devices/circuitpython/py/formatfloat.c, branch 4.0.0-rc.3 CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=4.0.0-rc.3 2018-03-01T06:00:02+00:00 py/formatfloat: Fix case where floats could render with negative digits. 2018-03-01T06:00:02+00:00 Damien George damien.p.george@gmail.com 2018-03-01T06:00:02+00:00 urn:sha1:955ee6477f4b1d3a70bfe97a1e7727848bf2d06d Prior to this patch, some architectures (eg unix x86) could render floats with "negative" digits, like ")". For example, '%.23e' % 1e-80 would come out as "1.0000000000000000/)/(,*0e-80". This patch fixes the known cases. py/formatfloat: Fix case where floats could render with a ":" character. 2018-03-01T05:02:59+00:00 Damien George damien.p.george@gmail.com 2018-03-01T05:02:59+00:00 urn:sha1:7b050fa76c6a763043739d40c82dde839d7f8fd9 Prior to this patch, some architectures (eg unix x86) could render floats with a ":" character in them, eg 1e+39 would come out as ":e+38" (":" is just after "9" in ASCII so this is like 10e+38). This patch fixes some of these cases. py/formatfloat: Fix rounding of %f format with edge-case FP values. 2018-03-01T04:51:03+00:00 Damien George damien.p.george@gmail.com 2018-03-01T04:47:17+00:00 urn:sha1:bc12eca461a317df842ce2e616afa97670cd0ce3 Prior to this patch the %f formatting of some FP values could be off by up to 1, eg '%.0f' % 123 would return "122" (unix x64). Depending on the FP precision (single vs double) certain numbers would format correctly, but others wolud not. This patch should fix all cases of rounding for %f. py/formatfloat: Use standard isinf, isnan funcs instead of custom ones. 2017-10-10T05:27:54+00:00 Damien George damien.p.george@gmail.com 2017-10-10T05:27:54+00:00 urn:sha1:dc948e4d54eb8f7fecbd26efcfb3cd5d02bf8500 Reduces code size by a tiny bit. py/formatfloat: Don't print the negative sign of a NaN value. 2017-10-10T05:01:13+00:00 Damien George damien.p.george@gmail.com 2017-10-04T12:15:55+00:00 urn:sha1:08a196697c5dfb8cbe3b3e85c1c5f94e3a27804c NaN may have the sign bit set but it has no meaning, so don't print it out. py/formatfloat: Don't post-increment variable that won't be used again. 2017-08-21T12:04:23+00:00 Damien George damien.p.george@gmail.com 2017-08-21T12:04:23+00:00 urn:sha1:f5309fc4ffa2ee2bf562e18eef3e16e1c22dfb66 all: Use the name MicroPython consistently in comments 2017-07-31T08:35:40+00:00 Alexander Steffen devel.20.webmeister@spamgourmet.com 2017-06-30T07:22:17+00:00 urn:sha1:55f33240f3d7051d4213629e92437a36f1fac50e There were several different spellings of MicroPython present in comments, when there should be only one. all: Remove trailing spaces, per coding conventions. 2017-07-19T03:12:10+00:00 Damien George damien.p.george@gmail.com 2017-07-19T03:12:10+00:00 urn:sha1:761e4c7ff62896c7d8f8c3dfc3cc98a4cc4f2f6f py,extmod: Some casts and minor refactors to quiet compiler warnings. 2017-07-07T01:32:22+00:00 Tom Collins tom.collins@digi.com 2017-06-30T23:23:29+00:00 urn:sha1:145796f037715e180b441b38c1ec1ba45ff77797 py/formatfloat: Fix number of digits and exponent sign when rounding. 2017-06-13T03:36:56+00:00 Damien George damien.p.george@gmail.com 2017-06-13T03:36:56+00:00 urn:sha1:6ed4581f545069488446682ee9b052798626327d This patch fixes 2 things when printing a floating-point number that requires rounding up of the mantissa: - retain the correct precision; eg 0.99 becomes 1.0, not 1.00 - if the exponent goes from -1 to 0 then render it as +0, not -0