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reads number as accurate as possible

This commit is contained in:
Yuichi Nishiwaki 2014-06-28 21:41:35 +09:00
parent b2a14ca0f1
commit 5d3c59fc98
1 changed files with 8 additions and 4 deletions
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12
src/read.c
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@ -178,14 +178,18 @@ read_uinteger(pic_state *pic, struct pic_port *port, char c)
static pic_value
read_number(pic_state *pic, struct pic_port *port, char c)
{
int64_t i, j;
char buf[256], *cur;
int64_t i;
i = read_uinteger(pic, port, c);
if (peek(port) == '.') {
next(port);
j = read_uinteger(pic, port, next(port));
return pic_float_value(i + (double)j * pow(10, -snprintf(NULL, 0, "%lld", j)));
cur = buf + snprintf(buf, sizeof buf, "%lld", i);
do {
*cur++ = next(port);
} while (isdigit(peek(port)));
*cur = '\0';
return pic_float_value(atof(buf));
}
else {
return pic_int_value(i);