diff options
Diffstat (limited to 'median.c')
| -rw-r--r-- | median.c | 22 |
1 files changed, 14 insertions, 8 deletions
@@ -6,6 +6,12 @@ #include <stdlib.h> #include <string.h> +#if defined(__GNUC__) +# define PURE __attribute__((__pure__)) +#else +# define PURE +#endif + struct group { char *key; @@ -24,7 +30,7 @@ static struct group groups_head; static struct group groups_tail; -static int +PURE static int isnumerical(const char *s) { if (*s == '+' || *s == '-') @@ -42,11 +48,11 @@ isnumerical(const char *s) } -static int +PURE static int cmp_num(const void *apv, const void *bpv) { - const char *a = *(const char **)apv; - const char *b = *(const char **)bpv; + const char *a = *(const char *const *)apv; + const char *b = *(const char *const *)bpv; int mul = 1; size_t an = 0, bn = 0, i; @@ -100,8 +106,8 @@ cmp_num(const void *apv, const void *bpv) static int cmp_str(const void *apv, const void *bpv) { - const char *a = *(const char **)apv; - const char *b = *(const char **)bpv; + const char *a = *(const char *const *)apv; + const char *b = *(const char *const *)bpv; return strcmp(a, b); } @@ -114,7 +120,7 @@ avg(char *a, const char *b) for (i = 0; a[i]; i++) { val = (a[i] & 15) + (b[i] & 15); carry = val & 1; - a[i] = (val >> 1) | '0'; + a[i] = (char)((val >> 1) | '0'); } return carry; } @@ -128,7 +134,7 @@ subavg(char *a, const char *b) for (i = 0; a[i]; i++) { val = (a[i] & 15) - (b[i] & 15); carry = val & 1; - a[i] = (val >> 1) | '0'; + a[i] = (char)((val >> 1) | '0'); } return carry; } |