diff options
Diffstat (limited to 'shell')
| -rw-r--r-- | shell/Config.in | 9 | ||||
| -rw-r--r-- | shell/ash.c | 34 |
2 files changed, 31 insertions, 12 deletions
diff --git a/shell/Config.in b/shell/Config.in index b064ed41b..c8f4a936c 100644 --- a/shell/Config.in +++ b/shell/Config.in @@ -67,6 +67,15 @@ config CONFIG_ASH_MATH_SUPPORT help Enable math support in the ash shell. +config CONFIG_ASH_MATH_SUPPORT_64 + bool " Extend Posix math support to 64 bit" + default n + depends on CONFIG_ASH_MATH_SUPPORT + help + Enable 64-bit math support in the ash shell. This will make + the shell slightly larger, but will allow computation with very + large numbers. + config CONFIG_ASH_GETOPTS bool " Enable getopt builtin to parse positional parameters" default n diff --git a/shell/ash.c b/shell/ash.c index e2205efd2..a1c4f346b 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -1446,7 +1446,13 @@ static void defun(char *, union node *); static void unsetfunc(const char *); #ifdef CONFIG_ASH_MATH_SUPPORT -static long dash_arith(const char *); +#ifdef CONFIG_ASH_MATH_SUPPORT_64 +typedef int64_t arith_t; +#else +typedef long arith_t; +#endif +static arith_t dash_arith(const char *); +static arith_t arith(const char *expr, int *perrcode); #endif #ifdef CONFIG_ASH_RANDOM_SUPPORT @@ -4531,7 +4537,7 @@ static void ifsfree(void); static void expandmeta(struct strlist *, int); static int patmatch(char *, const char *); -static int cvtnum(long); +static int cvtnum(arith_t); static size_t esclen(const char *, const char *); static char *scanleft(char *, char *, char *, char *, int, int); static char *scanright(char *, char *, char *, char *, int, int); @@ -5902,12 +5908,16 @@ casematch(union node *pattern, char *val) */ static int -cvtnum(long num) +cvtnum(arith_t num) { int len; expdest = makestrspace(32, expdest); +#ifdef CONFIG_ASH_MATH_SUPPORT_64 + len = fmtstr(expdest, 32, "%lld", (long long) num); +#else len = fmtstr(expdest, 32, "%ld", num); +#endif STADJUST(len, expdest); return len; } @@ -12488,10 +12498,10 @@ static int timescmd(int ac, char **av) } #ifdef CONFIG_ASH_MATH_SUPPORT -static long +static arith_t dash_arith(const char *s) { - long result; + arith_t result; int errcode = 0; INTOFF; @@ -12523,7 +12533,7 @@ static int letcmd(int argc, char **argv) { char **ap; - long i; + arith_t i; ap = argv + 1; if(!*ap) @@ -13094,8 +13104,8 @@ static inline int is_right_associativity(operator prec) typedef struct ARITCH_VAR_NUM { - long val; - long contidional_second_val; + arith_t val; + arith_t contidional_second_val; char contidional_second_val_initialized; char *var; /* if NULL then is regular number, else is variable name */ @@ -13152,9 +13162,9 @@ static int arith_lookup_val(v_n_t *t) static inline int arith_apply(operator op, v_n_t *numstack, v_n_t **numstackptr) { - long numptr_val; + int64_t numptr_val; v_n_t *numptr_m1; - long rez; + int64_t rez; int ret_arith_lookup_val; if (NUMPTR == numstack) goto err; /* There is no operator that can work @@ -13280,7 +13290,7 @@ arith_apply(operator op, v_n_t *numstack, v_n_t **numstackptr) goto err; } /* save to shell variable */ - sprintf(buf, "%ld", rez); + sprintf(buf, "%lld", (long long) rez); setvar(numptr_m1->var, buf, 0); /* after saving, make previous value for v++ or v-- */ if(op == TOK_POST_INC) @@ -13343,7 +13353,7 @@ static const char op_tokens[] = { #define endexpression &op_tokens[sizeof(op_tokens)-7] -extern long arith (const char *expr, int *perrcode) +static arith_t arith (const char *expr, int *perrcode) { register char arithval; /* Current character under analysis */ operator lasttok, op; |