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patch: add pl_float()

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This commit is contained in:
Alfred E. Heggestad 2011-03-16 21:57:52 +00:00
parent 424119c0d6
commit 85ab7c2120
2 changed files with 39 additions and 0 deletions
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1
include/re_fmt.h
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@ -32,6 +32,7 @@ uint32_t pl_u32(const struct pl *pl);
uint32_t pl_x32(const struct pl *pl);
uint64_t pl_u64(const struct pl *pl);
uint64_t pl_x64(const struct pl *pl);
double pl_float(const struct pl *pl);
bool pl_isset(const struct pl *pl);
int pl_strcpy(const struct pl *pl, char *str, size_t size);
int pl_strdup(char **dst, const struct pl *src);

38
src/fmt/pl.c
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@ -186,6 +186,44 @@ uint64_t pl_x64(const struct pl *pl)
}
/**
* Convert a pointer-length object to floating point representation
*
* @param pl Pointer-length object
*
* @return Double value
*/
double pl_float(const struct pl *pl)
{
double v=0, mul=1;
const char *p;
if (!pl || !pl->p)
return 0;
p = &pl->p[pl->l];
while (p > pl->p) {
const char ch = *--p;
if ('0' <= ch && ch <= '9') {
v += mul * (ch - '0');
mul *= 10;
}
else if (ch == '.') {
v /= mul;
mul = 1;
}
else {
return 0;
}
}
return v;
}
/**
* Check if pointer-length object is set
*