diff options
author | Eric Andersen <andersen@codepoet.org> | 2003-10-22 15:24:39 +0400 |
---|---|---|
committer | Eric Andersen <andersen@codepoet.org> | 2003-10-22 15:24:39 +0400 |
commit | a92877403ac522d17602ae24782b44a99a268539 (patch) | |
tree | b0c182fed4a45640f50a725d8e248aad7effb4b8 /miscutils/dc.c | |
parent | a48b0a3af71958c1cea6389893371664a47b1a39 (diff) |
Goetz Bock writes:
Dear list,
during my quest do pack busybox into an RPM, I've fixed a small bug
(missing \n) in dc's usage. And added two additional operations: mod and
exp/power.
Feel free to drop them.
Diffstat (limited to 'miscutils/dc.c')
-rw-r--r-- | miscutils/dc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/miscutils/dc.c b/miscutils/dc.c index 451423c62..f574ae4a0 100644 --- a/miscutils/dc.c +++ b/miscutils/dc.c @@ -44,6 +44,13 @@ static void mul(void) push(pop() * pop()); } +static void power(void) +{ + double topower = pop(); + + push(pow(pop(), topower)); +} + static void divide(void) { double divisor = pop(); @@ -51,6 +58,13 @@ static void divide(void) push(pop() / divisor); } +static void mod(void) +{ + unsigned int d = pop(); + + push((unsigned int) pop() % d); +} + static void and(void) { push((unsigned int) pop() & (unsigned int) pop()); @@ -119,10 +133,16 @@ static const struct op operators[] = { {"mul", mul}, {"/", divide}, {"div", divide}, + {"**", power}, + {"exp", power}, + {"pow", power}, + {"%", mod}, + {"mod", mod}, {"and", and}, {"or", or}, {"not", not}, {"eor", eor}, + {"xor", eor}, {"p", print_no_pop}, {"f", print_stack_no_pop}, {"o", set_output_base}, |