7u83/stc_rpncalc
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83 Commits 1 Branch 12 Tags 7.3 MiB
21be4081b2
Commit Graph

68 Commits

Author SHA1 Message Date
Jeff Wang
21be4081b2 add log10() function 2019-10-03 00:31:25 -04:00
Jeff Wang
0f17fbdcc7 fix digit entry before taking log 
separate out finishing entry/processing command into common function
 2019-10-03 00:31:20 -04:00
Jeff Wang
5c194c68e4 build fix 2019-10-02 23:27:58 -04:00
Jeff Wang
77d18b57c5 make sure number not negative before trying to take log 
also remove some TODOs
 2019-10-02 22:51:02 -04:00
Jeff Wang
cb92a82f4b add shift key and ability to calculate ln() 2019-10-02 22:47:53 -04:00
Jeff Wang
9fc462ca94 bugfix for backspacing from exp entry all the back to significand entry 
check for '.' needs to be after entry_i--
 2019-10-02 22:47:32 -04:00
Jeff Wang
5a3dc2337d more checks for NaN/errors before performing operations 2019-10-02 22:46:26 -04:00
Jeff Wang
23e49a0405 NUM_A_ARRAY cannot be less than num_lsu 2019-10-02 22:45:02 -04:00
Jeff Wang
ac1aaac096 initial natural log implementation 2019-10-02 22:43:23 -04:00
Jeff Wang
acc9c4821f prototyping of reciprocal and log functions 2019-10-02 02:52:08 -04:00
Jeff Wang
6eb48de844 more comments 2019-09-24 00:11:51 -04:00
Jeff Wang
4f020da222 use global registers for division, have sub_mag() operate directly on Accum and B 2019-09-23 23:46:58 -04:00
Jeff Wang
747355222d try to remove more trailing 0s 2019-09-23 23:06:43 -04:00
Jeff Wang
9dcb16681e fix desktop build warnings 2019-09-23 22:57:34 -04:00
Jeff Wang
eccd89807a improve initial estimate for division newton raphson iteration 2019-09-23 22:48:06 -04:00
Jeff Wang
52ddf7dd96 do not require BDecn to be preserved (frees up some xdata and code space) 2019-05-02 03:49:21 -04:00
Jeff Wang
0049f3df98 do not compile with stack auto, change functions to be nonreentrant, use fixed parameters 
- frees up ~4KB of code space
 2019-05-02 03:27:01 -04:00
Jeff Wang
6399cbf44f modify code to use accumulator architecture to minimize pointer usage 2019-05-01 03:54:57 -04:00
Jeff Wang
96c762aeed missed change for making number of exponent bits settable 2019-05-01 01:49:16 -04:00
Jeff Wang
60ed369c47 compare exponent directly for determining NaN 2019-05-01 01:40:23 -04:00
Jeff Wang
58a162fe4d allow number of exponent bits to be adjustable 2019-05-01 01:37:14 -04:00
Jeff Wang
4b87ad27c8 speed up division 2019-05-01 01:11:25 -04:00
Jeff Wang
fcf16153f6 change exponent from int16_t to int8_t to free up some space 2019-04-05 02:39:09 -04:00
Jeff Wang
836d4fc122 fix emulator lcd/calculator thread startup race 2019-04-05 02:10:10 -04:00
Jeff Wang
20946c44d4 detect division by 0 2019-04-05 01:07:42 -04:00
Jeff Wang
ef298cddd0 fix crash when displaying numbers between [0.1, 1) 2019-04-05 00:52:56 -04:00
Jeff Wang
66c611795e allow printing unknown characters in lcd emulator 2019-04-05 00:47:21 -04:00
Jeff Wang
ee917a71e5 add version string at poweron, also check for poweroff keys in interrupt 2019-04-05 00:47:07 -04:00
Jeff Wang
8af9701e15 bugfix for entering numbers such as 0.33 
this is a partial revert of commit 8550049335
 2019-04-04 03:36:35 -04:00
Jeff Wang
240dd570ae fix for LCD row tracking, fix for "phantom" keypress at powerup 2019-04-04 03:01:33 -04:00
Jeff Wang
4734fe5a0e add keyboard, fix display of negative numbers 2019-04-04 02:46:10 -04:00
Jeff Wang
8550049335 fix bug for entering numbers such as 0.01 2019-04-04 02:29:11 -04:00
Jeff Wang
5e04a18cd2 use semaphores for keyboard and lcd, add lcd thread for calling updateLcd() 2019-04-04 01:54:02 -04:00
Jeff Wang
89c5f0dc6c only process calculator keys and update lcd if keys pressed 2019-04-04 00:33:46 -04:00
Jeff Wang
fc6d8efc5f work on Qt GUI, still not working properly 2019-04-04 00:33:42 -04:00
Jeff Wang
8f39958679 start working on gui 2019-04-03 00:07:15 -04:00
Jeff Wang
1be980d85b fix reciprocol convergence 2019-04-02 23:57:28 -04:00
Jeff Wang
0278165339 remove unused funtion 2019-04-02 23:56:54 -04:00
Jeff Wang
bb102add67 add exponent character 2019-04-01 02:38:17 -04:00
Jeff Wang
f5d8d601a2 bugfix for keys 
- initialize count, so that there is no initial keypress at powerup
- use int8_t instead of uint32_t to pass new key, since only 1 new key
used
 2019-04-01 01:55:47 -04:00
Jeff Wang
8aec2ae134 fix exponent display 2019-04-01 01:12:02 -04:00
Jeff Wang
75a9c92b7d fix desktop build 2019-03-31 23:34:25 -04:00
Jeff Wang
fa0afa726b update readme 2019-03-31 23:34:13 -04:00
Jeff Wang
12e7f010e6 bugfix: latch on immediately, to ensure calculator stays on after poweron 2019-03-31 19:37:55 -04:00
Jeff Wang
d1ec11cad8 allow correct building/syntax highlighting on desktop 2019-03-31 19:37:55 -04:00
Jeff Wang
4ed3d1654e various bugfixes for decn arithmetic 2019-03-31 19:37:55 -04:00
Jeff Wang
43edb291cf attempt to reduce space usage 
- remove unecessary code
- ifdef "extra" code
- pass data through globals instead of functions accessing static data
- functions non-reentrant, locate tmps in xdata
 2019-03-31 19:37:52 -04:00
Jeff Wang
ecb0492534 initial calculator code 2019-03-31 19:33:59 -04:00
Jeff Wang
bdecc32b86 use global Buf everywhere for debugging 2019-03-28 00:41:54 -04:00
Jeff Wang
91b7b82462 add normal number display, number display bug fixes 2019-03-28 00:34:41 -04:00