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fix round trip check

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This commit is contained in:
Steve 2026-06-17 04:36:29 -04:00
parent 803e82e2f9
commit db8d52cab0
1 changed files with 6 additions and 2 deletions
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8
src/common/sstream.c
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@ -7,6 +7,7 @@
#include <stdarg.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
void c11_sbuf__ctor(c11_sbuf* self) {
@ -53,11 +54,14 @@ void c11_sbuf__write_f64(c11_sbuf* self, double val, int precision) {
char b[32];
int size;
if(precision < 0) {
size = snprintf(b, sizeof(b), "%.17g", val);
size = snprintf(b, sizeof(b), "%.*g", 15, val);
if(strtod(b, NULL) != val) {
size = snprintf(b, sizeof(b), "%.*g", 17, val);
}
c11_sbuf__write_cstr(self, b);
bool all_is_digit = true;
for(int i = 1; i < size; i++) {
if(!isdigit((unsigned char)b[i])) {
if(!isdigit(b[i])) {
all_is_digit = false;
break;
}