diff options
Diffstat (limited to 'miscutils')
| -rw-r--r-- | miscutils/Config.in | 8 | ||||
| -rw-r--r-- | miscutils/dc.c | 4 |
2 files changed, 12 insertions, 0 deletions
diff --git a/miscutils/Config.in b/miscutils/Config.in index 0c80ae6..15f677a 100644 --- a/miscutils/Config.in +++ b/miscutils/Config.in @@ -138,6 +138,14 @@ config DC Dc is a reverse-polish desk calculator which supports unlimited precision arithmetic. +config FEATURE_DC_LIBM + bool "Enable power and exp functions (requires libm)" + default n + depends on DC + help + Enable power and exp functions. + NOTE: This will require libm to be present for linking. + config DEVFSD bool "devfsd (obsolete)" default n diff --git a/miscutils/dc.c b/miscutils/dc.c index 47ec060..7d5886e 100644 --- a/miscutils/dc.c +++ b/miscutils/dc.c @@ -53,12 +53,14 @@ static void mul(void) push(pop() * pop()); } +#if ENABLE_FEATURE_DC_LIBM static void power(void) { double topower = pop(); push(pow(pop(), topower)); } +#endif static void divide(void) { @@ -137,9 +139,11 @@ static const struct op operators[] = { {"mul", mul}, {"/", divide}, {"div", divide}, +#if ENABLE_FEATURE_DC_LIBM {"**", power}, {"exp", power}, {"pow", power}, +#endif {"%", mod}, {"mod", mod}, {"and", and}, |