precision specifiers for %f

2018-06-30 13:55:45 +09:00 · 2018-06-30 13:55:45 +09:00 · 397b6045b5
commit 397b6045b5
parent 4df958b1ba
1 changed files with 1 additions and 1 deletions
--- a/libc/stdio/printf.c
+++ b/libc/stdio/printf.c
@ -229,7 +229,7 @@ size_t xvasprintf(char * buf, const char * fmt, va_list args) {
 					i = b - buf;
 					*b++ = '.';
 					buf++;
-					for (int j = 0; j < 10; ++j) {
+					for (int j = 0; j < (precision > -1 ? precision : 8); ++j) {
 						if ((int)(val * 100000.0) % 100000 == 0 && j != 0) break;
 						val *= 10.0;
 						print_dec((int)(val) % 10, 0, buf, &i, 0, 0);