Commit Graph

16218 Commits

Author SHA1 Message Date
Denys Vlasenko
7b1df3db97 bc: pull zbc_lex_next() call out of zbc_parse_operator() into one caller that uses it
function                                             old     new   delta
bc_parse_operator                                      -     144    +144
bc_parse_expr_empty_ok                              1788    1792      +4
zbc_parse_operator                                   170       -    -170
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/0 up/down: 148/-170)          Total: -22 bytes
   text	   data	    bss	    dec	    hex	filename
 979938	    485	   7296	 987719	  f1247	busybox_old
 979916	    485	   7296	 987697	  f1231	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 23:12:48 +01:00
Denys Vlasenko
17df882a57 bx: add more debug scaffolding
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 23:00:24 +01:00
Denys Vlasenko
2ea53a45b7 bc: convert macro bc_parse_push() to function, add debug infrastructure
function                                             old     new   delta
bc_parse_push                                          -      14     +14
zbc_parse_else                                       132     134      +2
bc_parse_pushName                                     63      61      -2
zbc_parse_operator                                   174     170      -4
bc_parse_number                                       87      83      -4
zbc_parse_string                                      97      89      -8
bc_parse_pushIndex                                    68      60      -8
zbc_parse_endBody                                    339     326     -13
zbc_parse_name                                       401     387     -14
zdc_parse_mem                                        107      91     -16
zdc_parse_expr                                       680     638     -42
zbc_parse_stmt                                      1502    1456     -46
bc_parse_expr_empty_ok                              1838    1788     -50
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/11 up/down: 16/-207)         Total: -191 bytes
   text	   data	    bss	    dec	    hex	filename
 980129	    485	   7296	 987910	  f1306	busybox_old
 979938	    485	   7296	 987719	  f1247	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 17:51:17 +01:00
Denys Vlasenko
f86e960e7c bc: rename zbc_parse_text() to ..._init(), reuse existing code for library parsing
function                                             old     new   delta
zbc_parse_text_init                                    -     123    +123
bc_vm_run                                            423     398     -25
zbc_parse_text                                       123       -    -123
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/1 up/down: 123/-148)          Total: -25 bytes
   text	   data	    bss	    dec	    hex	filename
 980154	    485	   7296	 987935	  f131f	busybox_old
 980129	    485	   7296	 987910	  f1306	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 17:02:27 +01:00
Denys Vlasenko
0a23814e98 bc: compress two constant arguments of bc_lex_assign() to one
function                                             old     new   delta
zbc_program_num                                      836     835      -1
bc_lex_assign                                         34      31      -3
zbc_lex_next                                        1930    1880     -50
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-54)             Total: -54 bytes
   text	   data	    bss	    dec	    hex	filename
 980208	    485	   7296	 987989	  f1355	busybox_old
 980154	    485	   7296	 987935	  f131f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 16:48:34 +01:00
Denys Vlasenko
8226912b2c bc: remove stale comment, empty lines, regularize comment style
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 16:30:56 +01:00
Denys Vlasenko
87b49beeda bc: tweak bc_num_parseDecimal() for readability, logic is not changed
function                                             old     new   delta
zbc_program_num                                      836     835      -1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 16:24:01 +01:00
Denys Vlasenko
240d7ee3fc bc: shrink s() in library again
function                                             old     new   delta
bc_lib                                              1596    1586     -10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-10)             Total: -10 bytes
   text	   data	    bss	    dec	    hex	filename
 980152	    485	   7296	 987933	  f131d	busybox_old
 980142	    485	   7296	 987923	  f1313	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 11:27:09 +01:00
Denys Vlasenko
fc9d26902b bc: yet another library shrink
function                                             old     new   delta
bc_lib                                              1604    1596      -8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-8)               Total: -8 bytes
   text	   data	    bss	    dec	    hex	filename
 980160	    485	   7296	 987941	  f1325	busybox_old
 980152	    485	   7296	 987933	  f131d	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 11:00:23 +01:00
Denys Vlasenko
c06537d9bb bc: shrink internal library yet more
function                                             old     new   delta
bc_lib                                              1609    1604      -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-5)               Total: -5 bytes
   text	   data	    bss	    dec	    hex	filename
 980165	    485	   7296	 987946	  f132a	busybox_old
 980160	    485	   7296	 987941	  f1325	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 10:10:37 +01:00
Denys Vlasenko
203210e253 bc: shrink internal library more
function                                             old     new   delta
bc_lib                                              1618    1609      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 09:53:50 +01:00
Denys Vlasenko
3ac0c21a1f bc: shrink internal library
function                                             old     new   delta
bc_lib                                              1674    1618     -56

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 01:01:01 +01:00
Denys Vlasenko
57b6918b0a bc: group ENABLE_BC code a bit better, no logic changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-14 00:12:13 +01:00
Denys Vlasenko
5f263f406c bc: fix "dc only" bug
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 22:49:59 +01:00
Denys Vlasenko
e755e30402 bc: unbreak "only bc" and "only dc" configs
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 22:25:28 +01:00
Denys Vlasenko
89198a9e5d bc: simplify bc_lex_whitespace()
function                                             old     new   delta
bc_lex_whitespace                                     52      41     -11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 21:31:29 +01:00
Denys Vlasenko
bbcecc4118 bc: G.sbgn and G.send are unused, remove them
function                                             old     new   delta
bc_program_index                                      66      64      -2
bc_parse_expr_empty_ok                              1840    1838      -2
dc_main                                              176     168      -8
bc_main                                               73      65      -8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-20)             Total: -20 bytes
   text	   data	    bss	    dec	    hex	filename
 980327	    485	   7296	 988108	  f13cc	busybox_old
 980307	    485	   7296	 988088	  f13b8	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 21:17:43 +01:00
Denys Vlasenko
0fe270e775 bc: simplify filename saving in zbc_vm_file()
function                                             old     new   delta
bc_vm_run                                            433     423     -10
zbc_vm_file                                          187     174     -13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-23)             Total: -23 bytes
   text	   data	    bss	    dec	    hex	filename
 980350	    485	   7296	 988131	  f13e3	busybox_old
 980327	    485	   7296	 988108	  f13cc	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 19:58:58 +01:00
Denys Vlasenko
915c72b273 bc: do not append duplicate NUL, reduce indentation in bc_read_line()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 19:29:02 +01:00
Denys Vlasenko
82ea67fbfa bc: change bc_read_line() and zbc_vm_stdin() to avoid double buffers
function                                             old     new   delta
bc_read_line                                         129     124      -5
bc_vm_run                                            523     433     -90
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-95)             Total: -95 bytes
   text	   data	    bss	    dec	    hex	filename
 980445	    485	   7296	 988226	  f1442	busybox_old
 980350	    485	   7296	 988131	  f13e3	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 19:24:42 +01:00
Denys Vlasenko
b7e61e3e4a bc: further simplification in zbc_vm_stdin()
function                                             old     new   delta
bc_vm_run                                            500     523     +23
bc_vec_concat                                         66       -     -66
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 23/-66)            Total: -43 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 18:16:39 +01:00
Denys Vlasenko
818b602c88 bc: fix another thinko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 17:56:35 +01:00
Denys Vlasenko
335b4efd2f bc: fix a thinko: dc uses [] string delimiters, bot bc!
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 17:46:26 +01:00
Denys Vlasenko
766f67250f bc: fix comment handling
function                                             old     new   delta
bc_vm_run                                            514     513      -1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 17:43:23 +01:00
Denys Vlasenko
7dc0a51286 bc: further zbc_vm_stdin() optimizations
function                                             old     new   delta
bc_vm_run                                            534     514     -20

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 17:36:41 +01:00
Denys Vlasenko
40534bb6e2 bc: shrink zbc_vm_stdin()
function                                             old     new   delta
bc_vm_run                                            592     534     -58

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 17:27:00 +01:00
Denys Vlasenko
89e785af98 bc: trim config help text, add a few comments, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-13 16:35:52 +01:00
Denys Vlasenko
9811ad02bd bc: unbreak CONFIG_FEATURE_BC_SIGNALS=y config
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 23:25:13 +01:00
Denys Vlasenko
c2265f526e bc: remove lexer function pointer
function                                             old     new   delta
zbc_lex_next                                          81    1930   +1849
bc_parse_create                                      131     124      -7
common_parse_init                                     31       -     -31
zdc_lex_token                                        672       -    -672
zbc_lex_token                                       1193       -   -1193
------------------------------------------------------------------------------
(add/remove: 0/3 grow/shrink: 1/1 up/down: 1849/-1903)        Total: -54 bytes
   text	   data	    bss	    dec	    hex	filename
 980634	    485	   7296	 988415	  f14ff	busybox_old
 980580	    485	   7296	 988361	  f14c9	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 23:14:44 +01:00
Denys Vlasenko
c0ef23ca40 bc: remove parse function pointer
function                                             old     new   delta
zbc_program_asciify                                    -     372    +372
zcommon_parse                                          -     341    +341
zbc_program_printStream                                -     141    +141
zbc_program_pushArray                                  -     111    +111
zbc_program_nquit                                      -      92     +92
zbc_vm_process                                        61      63      +2
zbc_parse_text                                       122     123      +1
bc_vm_run                                            591     592      +1
zdc_parse_mem                                        108     107      -1
zbc_parse_operator                                   175     174      -1
zbc_parse_else                                       133     132      -1
zbc_parse_body                                       104     103      -1
zbc_program_read                                     261     259      -2
zdc_parse_register                                    40      37      -3
zbc_parse_string                                     100      97      -3
zbc_parse_endBody                                    343     339      -4
zdc_parse_expr                                       688     680      -8
zbc_parse_auto                                       198     188     -10
zbc_parse_name                                       414     401     -13
common_parse_init                                     45      31     -14
zdc_parse_parse                                       23       -     -23
bc_parse_create                                      158     131     -27
zbc_parse_stmt                                      1540    1502     -38
bc_parse_expr_empty_ok                              1882    1840     -42
zbc_program_exec                                    3963    3837    -126
zbc_parse_parse                                      311       -    -311
zbc_program_modexp                                   556       -    -556
------------------------------------------------------------------------------
(add/remove: 5/3 grow/shrink: 3/16 up/down: 1061/-1184)      Total: -123 bytes
   text	   data	    bss	    dec	    hex	filename
 980757	    485	   7296	 988538	  f157a	busybox_old
 980634	    485	   7296	 988415	  f14ff	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 23:03:10 +01:00
Denys Vlasenko
19f110751d bc: convert two more functions to "z" logic
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 22:48:19 +01:00
Denys Vlasenko
8a89247e0a bc: remove BC_STATUS_EOF (again), the condition is detectable as len==0
function                                             old     new   delta
bc_read_line                                         147     129     -18
bc_vm_run                                            618     591     -27
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-45)             Total: -45 bytes
   text	   data	    bss	    dec	    hex	filename
 980802	    485	   7296	 988583	  f15a7	busybox_old
 980757	    485	   7296	 988538	  f157a	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 22:43:58 +01:00
Denys Vlasenko
d8078a79be dc: fix EOF handling in case of last line being incomplete
This wasn't working correctly:

$ echo -ne '10 20+p' | dc
30

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 21:56:06 +01:00
Denys Vlasenko
9a23b07c4c testsuite: add bc and dc tests
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 21:41:40 +01:00
Denys Vlasenko
d6ad3666dc bc: further conversions to "z" logic
function                                             old     new   delta
bc_program_exec                                     3876       -   -3876
zbc_program_exec                                       -    3963   +3963
bc_program_execStr                                   429       -    -429
zbc_program_execStr                                    -     427    +427
bc_vm_file                                           197       -    -197
zbc_vm_file                                            -     187    +187
bc_vm_process                                         74       -     -74
zbc_vm_process                                         -      61     +61
bc_parse_pushIndex                                    66      68      +2
bc_vm_run                                            624     618      -6
dc_main                                              187     176     -11
bc_program_reset                                      64       -     -64
zbc_program_pushArray                                111       -    -111
------------------------------------------------------------------------------
(add/remove: 4/6 grow/shrink: 1/2 up/down: 4640/-4768)       Total: -128 bytes
   text	   data	    bss	    dec	    hex	filename
 980922	    485	   7296	 988703	  f161f	busybox_old
 980794	    485	   7296	 988575	  f159f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 21:39:10 +01:00
Denys Vlasenko
c2da68e896 bc: optimize bc_parse_pushIndex()
function                                             old     new   delta
bc_parse_pushIndex                                    80      68     -12

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 16:44:34 +01:00
Denys Vlasenko
26819db9a3 bc: convert even more of lexer functions to "z" convention
function                                             old     new   delta
bc_parse_name                                        416       -    -416
zbc_parse_name                                         -     414    +414
bc_parse_parse                                       305       -    -305
zbc_parse_parse                                        -     311    +311
bc_program_read                                      271       -    -271
zbc_program_read                                       -     261    +261
bc_parse_text                                        129       -    -129
zbc_parse_text                                         -     122    +122
dc_parse_parse                                        26       -     -26
zdc_parse_parse                                        -      23     +23
bc_program_index                                      66      64      -2
bc_vm_process                                         92      74     -18
bc_program_execStr                                   460     429     -31
bc_parse_expr_empty_ok                              1939    1882     -57
------------------------------------------------------------------------------
(add/remove: 5/5 grow/shrink: 0/4 up/down: 1131/-1255)       Total: -124 bytes
   text	   data	    bss	    dec	    hex	filename
 981058	    485	   7296	 988839	  f16a7	busybox_old
 980934	    485	   7296	 988715	  f162b	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 16:09:47 +01:00
Denys Vlasenko
ae0faf91d0 bc: convert even more of lexer functions to "z" convention
function                                             old     new   delta
bc_parse_stmt                                       1594       -   -1594
zbc_parse_stmt                                         -    1540   +1540
common_parse_expr                                     43       -     -43
zcommon_parse_expr                                     -      40     +40
bc_parse_expr                                         24       -     -24
zbc_parse_expr                                         -      24     +24
zbc_parse_body                                       108     104      -4
bc_program_read                                      277     271      -6
bc_program_execStr                                   468     460      -8
bc_parse_expr_empty_ok                              1955    1939     -16
bc_parse_name                                        451     416     -35
bc_parse_parse                                       476     305    -171
------------------------------------------------------------------------------
(add/remove: 3/3 grow/shrink: 0/6 up/down: 1604/-1901)       Total: -297 bytes
   text	   data	    bss	    dec	    hex	filename
 981355	    485	   7296	 989136	  f17d0	busybox_old
 981058	    485	   7296	 988839	  f16a7	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 15:19:54 +01:00
Denys Vlasenko
8cd468f604 bc: convert more of lexer functions to "z" convention
function                                             old     new   delta
dc_parse_expr                                        748       -    -748
zdc_parse_expr                                         -     688    +688
bc_parse_endBody                                     338       -    -338
zbc_parse_endBody                                      -     343    +343
bc_parse_auto                                        201       -    -201
zbc_parse_auto                                         -     198    +198
dc_parse_mem                                         115       -    -115
zdc_parse_mem                                          -     108    +108
bc_parse_body                                        116       -    -116
zbc_parse_body                                         -     108    +108
bc_parse_string                                      102       -    -102
zbc_parse_string                                       -     100    +100
dc_parse_register                                     43       -     -43
zdc_parse_register                                     -      40     +40
common_parse_expr                                     40      43      +3
bc_parse_parse                                       321     476    +155
bc_parse_stmt                                       1598    1594      -4
dc_parse_parse                                        44      26     -18
bc_parse_reset                                       153       -    -153
------------------------------------------------------------------------------
(add/remove: 7/8 grow/shrink: 2/2 up/down: 1743/-1838)        Total: -95 bytes
   text	   data	    bss	    dec	    hex	filename
 981450	    485	   7296	 989231	  f182f	busybox_old
 981355	    485	   7296	 989136	  f17d0	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 14:57:15 +01:00
Denys Vlasenko
9a34e89289 bc: partially convert lexer functions to "z" convention
function                                             old     new   delta
bc_lex_token                                        1228       -   -1228
zbc_lex_token                                          -    1193   +1193
dc_lex_token                                         674       -    -674
zdc_lex_token                                          -     672    +672
bc_parse_operator                                    177       -    -177
zbc_parse_operator                                     -     175    +175
bc_parse_else                                        133       -    -133
zbc_parse_else                                         -     133    +133
bc_lex_next                                           91       -     -91
zbc_lex_next                                           -      81     +81
dc_parse_expr                                        744     748      +4
bc_parse_string                                      100     102      +2
bc_parse_body                                        114     116      +2
dc_parse_mem                                         116     115      -1
bc_parse_text                                        130     129      -1
dc_parse_register                                     51      43      -8
bc_parse_endBody                                     358     338     -20
bc_parse_name                                        513     451     -62
bc_parse_auto                                        265     201     -64
bc_parse_expr_empty_ok                              2032    1955     -77
bc_parse_parse                                       417     321     -96
bc_parse_stmt                                       1753    1598    -155
------------------------------------------------------------------------------
(add/remove: 5/5 grow/shrink: 3/9 up/down: 2262/-2787)       Total: -525 bytes
   text	   data	    bss	    dec	    hex	filename
 981975	    485	   7296	 989756	  f1a3c	busybox_old
 981450	    485	   7296	 989231	  f182f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 13:58:55 +01:00
Denys Vlasenko
251fbb57be bc: code shrink in bc_num_cmp()
function                                             old     new   delta
bc_num_cmp                                           275     231     -44

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 11:51:32 +01:00
Denys Vlasenko
16494f557f bc: simplify zbc_program_logical()
function                                             old     new   delta
bc_program_exec                                     3918    3876     -42
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-42)             Total: -42 bytes
   text	   data	    bss	    dec	    hex	filename
 982061	    485	   7296	 989842	  f1a92	busybox_old
 982019	    485	   7296	 989800	  f1a68	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 00:51:53 +01:00
Denys Vlasenko
69171dc466 bc: simplify nested read() check
function                                             old     new   delta
bc_vm_run                                            622     624      +2
dc_main                                              186     187      +1
bc_main                                               72      73      +1
bc_program_read                                      312     277     -35
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/1 up/down: 4/-35)             Total: -31 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-12 00:29:24 +01:00
Denys Vlasenko
12b9eaf787 bc: in non-interactive config, POSIX error functions never return nonzero
function                                             old     new   delta
bc_parse_expr_empty_ok                              2036    2032      -4
bc_parse_stmt                                       1767    1753     -14
bc_lex_token                                        1259    1228     -31
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-49)             Total: -49 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 23:50:14 +01:00
Denys Vlasenko
f0f069b08f bc: use common_parse_init() in bc_vm_init()
function                                             old     new   delta
common_parse_init                                     26      45     +19
dc_parse_init                                         17       -     -17
bc_parse_init                                         17       -     -17
bc_vm_init                                           744     725     -19
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(add/remove: 0/2 grow/shrink: 1/1 up/down: 19/-53)            Total: -34 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 23:22:52 +01:00
Denys Vlasenko
4dd3652c2f bc: fix EOF handling in bc_program_read()
$ bc -q
read()
2^D^D2
     ^ prints the result of read()'ed expression

function                                             old     new   delta
zbc_program_print                                    629     642     +13
bc_program_read                                      322     312     -10
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 13/-10)              Total: 3 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 22:45:15 +01:00
Denys Vlasenko
2c6f563216 bc: tweak comment
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 21:21:14 +01:00
Denys Vlasenko
c008a73762 bc: convert bc_program_asciify to "z" function
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 20:57:53 +01:00
Denys Vlasenko
9f657e0f7d bc: shrink bc_program_printString
function                                             old     new   delta
zbc_program_print                                    665     642     -23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 19:52:25 +01:00
Denys Vlasenko
259137d0f0 bc: convert zbc_program_op to "z" function, fix a thinko in prev commits
function                                             old     new   delta
zbc_program_assign                                   448     447      -1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 19:44:14 +01:00