9037757c5
Denys Vlasenko
2021-02-26
Subject
dc: more docs in --help
Binary
No binary (build failed)
Architecture & Compiler Flags
—
Build Log
(log yok)
Commit Diff GitHub →
miscutils/bc.c+14 -13
| @@ -143,12 +143,13 @@ | |
| //usage: "\n~ - divide with remainder" | |
| //usage: "\n| - modular exponentiation" | |
| //usage: "\nv - square root" | |
| - | //////// "\n_NNN - push neagtive number -NNN |
| - | //////// "\n[string] - push string |
| + | //////// "\nA-F - digits 10..15 |
| + | //////// "\n_NNN - push negative number -NNN |
| + | //////// "\n[string] - push string (in FreeBSD, \[, \] and \\ are escapes, not implemented here and in GNU) |
| //////// "\nR - DC_LEX_POP pop and discard | |
| //////// "\nc - DC_LEX_CLEAR_STACK clear stack | |
| - | //////// "\nd - DC_LEX_DUPLICATE pop, push, push |
| - | //////// "\nr - DC_LEX_SWAP pop 1, pop 2, push 1, push 2 |
| + | //////// "\nd - DC_LEX_DUPLICATE duplicate top-of-stack |
| + | //////// "\nr - DC_LEX_SWAP swap top-of-stack |
| //////// "\n:r - DC_LEX_COLON pop index, pop value, store to array 'r' | |
| //////// "\n;r - DC_LEX_SCOLON pop index, fetch from array 'r', push | |
| //////// "\nLr - DC_LEX_LOAD_PO, pop register 'r', push | |
| @@ -157,21 +158,21 @@ | |
| //////// "\nsr - DC_LEX_OP_ASSIGN pop, assign to register 'r' | |
| //////// "\n? - DC_LEX_READ read line and execute | |
| //////// "\nx - DC_LEX_EXECUTE pop string and execute | |
| - | //////// "\n<r - XC_LEX_OP_REL_GT pop, pop, execute register 'r' if top-of-stack was greater |
| - | //////// "\n>r - XC_LEX_OP_REL_LT pop, pop, execute register 'r' if top-of-stack was less |
| + | //////// "\n<r - XC_LEX_OP_REL_GT pop, pop, execute register 'r' if top-of-stack was less |
| + | //////// "\n>r - XC_LEX_OP_REL_LT pop, pop, execute register 'r' if top-of-stack was greater |
| //////// "\n=r - XC_LEX_OP_REL_EQ pop, pop, execute register 'r' if equal | |
| - | //////// "\n!<r !>r !=r - negated forms |
| - | //////// "\ne - DC_LEX_ELSE >tef: "if greater execute 't' else execute 'f'" |
| + | //////// "\n !<r !>r !=r - negated forms |
| + | //////// "\n >tef - "if greater execute register 't' else execute 'f'" |
| //////// "\nQ - DC_LEX_NQUIT pop, "break N" from macro invocations | |
| //////// "\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 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) |
| + | //////// "\n( - DC_LEX_LPAREN (FreeBSD, not in GNU) pop, pop, if top-of-stack was less push 1 else push 0 |
| + | //////// "\n{ - DC_LEX_LBRACE (FreeBSD, not in GNU) pop, pop, if top-of-stack was less-or-equal push 1 else push 0 |
| + | //////// "\nG - DC_LEX_EQ_NO_REG (FreeBSD, not in GNU) pop, pop, if equal push 1 else push 0 |
| + | //////// "\nN - DC_LEX_OP_BOOL_NOT (FreeBSD, not in GNU) pop, if 0 push 1 else push 0 |
| + | //////// FreeBSD also has J and M commands, used internally by bc |
| //////// "\nn - DC_LEX_PRINT_POP pop, print without newline | |
| //////// "\nP - DC_LEX_PRINT_STREAM pop, print string or hex bytes | |
| //usage: ) | |