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authorDenys Vlasenko2021-02-26 14:48:04 +0100
committerDenys Vlasenko2021-02-26 14:48:04 +0100
commit1a37aa7a88722f49928f6cd7851476aa4525462d (patch)
tree82cd26603c44d729bfc5c548228d54488e3b78de /miscutils
parentace81cd46ce53e60fe702cc1ac857989207e7ac4 (diff)
downloadbusybox-1a37aa7a88722f49928f6cd7851476aa4525462d.zip
busybox-1a37aa7a88722f49928f6cd7851476aa4525462d.tar.gz
dc: document what non-GNU commands do
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'miscutils')
-rw-r--r--miscutils/bc.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c
index 9156409..cc48ed3 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -166,12 +166,12 @@
//////// "\nq - DC_LEX_QUIT "break 2" (if less than 2 levels of macros, exit dc)
//////// "\nX - DC_LEX_SCALE_FACTOR pop, push number of fractional digits
//////// "\nZ - DC_LEX_LENGTH pop, push number of digits it has (or number of characters in string)
-//////// "\na - DC_LEX_ASCIIFY pop, push low-order byte as char or 1st string char
-//////// "\n( - DC_LEX_LPAREN ?
-//////// "\n{ - DC_LEX_LBRACE ?
+//////// "\na - DC_LEX_ASCIIFY pop, push low-order byte as char or 1st char of string
+//////// "\n( - DC_LEX_LPAREN (not in GNU) pop, pop, if top-of-stack was less push 1 else push 0
+//////// "\n{ - DC_LEX_LBRACE (not in GNU) pop, pop, if top-of-stack was less-or-equal push 1 else push 0
+//////// "\nG - DC_LEX_EQ_NO_REG (not in GNU) pop, pop, if equal push 1 else push 0
+//////// "\nN - DC_LEX_OP_BOOL_NOT (not in GNU) pop, if 0 push 1 else push 0
//////// "\n_ - XC_LEX_NEG (not a command - starts negative number)
-//////// "\nG - DC_LEX_EQ_NO_REG (? GNU dc has no such cmd)
-//////// "\nN - DC_LEX_OP_BOOL_NOT (? GNU dc has no such cmd)
//////// "\nn - DC_LEX_PRINT_POP pop, print without newline
//////// "\nP - DC_LEX_PRINT_STREAM pop, print string or hex bytes
//usage: )