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Have pg_itoa, pg_ltoa and pg_lltoa return the length of the string

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Core by no means makes excessive use of these functions, but quite a large
number of those usages do require the caller to call strlen() on the
returned string.  This is quite wasteful since these functions do already
have a good idea of the length of the string, so we might as well just
have them return that.

Reviewed-by: Andrew Gierth
Discussion: https://postgr.es/m/CAApHDvrm2A5x2uHYxsqriO2cUaGcFvND%2BksC9e7Tjep0t2RK_A%40mail.gmail.com
This commit is contained in:
David Rowley
2020-06-13 12:32:00 +12:00
parent 9a7fccd9ea
commit dad75eb4a8
5 changed files with 38 additions and 25 deletions
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6
src/include/utils/builtins.h
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@@ -47,11 +47,11 @@ extern int namestrcmp(Name name, const char *str);
extern int32 pg_atoi(const char *s, int size, int c);
extern int16 pg_strtoint16(const char *s);
extern int32 pg_strtoint32(const char *s);
extern void pg_itoa(int16 i, char *a);
extern int pg_itoa(int16 i, char *a);
extern int pg_ultoa_n(uint32 l, char *a);
extern int pg_ulltoa_n(uint64 l, char *a);
extern void pg_ltoa(int32 l, char *a);
extern void pg_lltoa(int64 ll, char *a);
extern int pg_ltoa(int32 l, char *a);
extern int pg_lltoa(int64 ll, char *a);
extern char *pg_ultostr_zeropad(char *str, uint32 value, int32 minwidth);
extern char *pg_ultostr(char *str, uint32 value);
extern uint64 pg_strtouint64(const char *str, char **endptr, int base);