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INCRBYFLOAT implementation

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This commit is contained in:
antirez
2011-11-12 19:27:35 +01:00
parent 64c7499eb8
commit 5574b53eae
4 changed files with 88 additions and 2 deletions
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26
src/t_string.c
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@ -1,4 +1,5 @@
#include "redis.h"
#include <math.h> /* isnan(), isinf() */
/*-----------------------------------------------------------------------------
* String Commands
@ -382,6 +383,31 @@ void decrbyCommand(redisClient *c) {
incrDecrCommand(c,-incr);
}
void incrbyfloatCommand(redisClient *c) {
long double incr, value;
robj *o, *new;
o = lookupKeyWrite(c->db,c->argv[1]);
if (o != NULL && checkType(c,o,REDIS_STRING)) return;
if (getLongDoubleFromObjectOrReply(c,o,&value,NULL) != REDIS_OK ||
getLongDoubleFromObjectOrReply(c,c->argv[2],&incr,NULL) != REDIS_OK)
return;
value += incr;
if (isnan(value) || isinf(value)) {
addReplyError(c,"increment would produce NaN or Infinity");
return;
}
new = createStringObjectFromLongDouble(value);
if (o)
dbOverwrite(c->db,c->argv[1],new);
else
dbAdd(c->db,c->argv[1],new);
signalModifiedKey(c->db,c->argv[1]);
server.dirty++;
addReplyBulk(c,new);
}
void appendCommand(redisClient *c) {
size_t totlen;
robj *o, *append;