diff options
Diffstat (limited to 'lib/tiny-printf.c')
| -rw-r--r-- | lib/tiny-printf.c | 47 |
1 files changed, 36 insertions, 11 deletions
diff --git a/lib/tiny-printf.c b/lib/tiny-printf.c index 30ac759..0b8512f 100644 --- a/lib/tiny-printf.c +++ b/lib/tiny-printf.c @@ -38,8 +38,8 @@ static void out_dgt(struct printf_info *info, char dgt) info->zs = 1; } -static void div_out(struct printf_info *info, unsigned int *num, - unsigned int div) +static void div_out(struct printf_info *info, unsigned long *num, + unsigned long div) { unsigned char dgt = 0; @@ -56,9 +56,9 @@ int _vprintf(struct printf_info *info, const char *fmt, va_list va) { char ch; char *p; - unsigned int num; + unsigned long num; char buf[12]; - unsigned int div; + unsigned long div; while ((ch = *(fmt++))) { if (ch != '%') { @@ -66,6 +66,7 @@ int _vprintf(struct printf_info *info, const char *fmt, va_list va) } else { bool lz = false; int width = 0; + bool islong = false; ch = *(fmt++); if (ch == '0') { @@ -80,6 +81,11 @@ int _vprintf(struct printf_info *info, const char *fmt, va_list va) ch = *fmt++; } } + if (ch == 'l') { + ch = *(fmt++); + islong = true; + } + info->bf = buf; p = info->bf; info->zs = 0; @@ -89,24 +95,43 @@ int _vprintf(struct printf_info *info, const char *fmt, va_list va) goto abort; case 'u': case 'd': - num = va_arg(va, unsigned int); - if (ch == 'd' && (int)num < 0) { - num = -(int)num; - out(info, '-'); + div = 1000000000; + if (islong) { + num = va_arg(va, unsigned long); + if (sizeof(long) > 4) + div *= div * 10; + } else { + num = va_arg(va, unsigned int); + } + + if (ch == 'd') { + if (islong && (long)num < 0) { + num = -(long)num; + out(info, '-'); + } else if (!islong && (int)num < 0) { + num = -(int)num; + out(info, '-'); + } } if (!num) { out_dgt(info, 0); } else { - for (div = 1000000000; div; div /= 10) + for (; div; div /= 10) div_out(info, &num, div); } break; case 'x': - num = va_arg(va, unsigned int); + if (islong) { + num = va_arg(va, unsigned long); + div = 1UL << (sizeof(long) * 8 - 4); + } else { + num = va_arg(va, unsigned int); + div = 0x10000000; + } if (!num) { out_dgt(info, 0); } else { - for (div = 0x10000000; div; div /= 0x10) + for (; div; div /= 0x10) div_out(info, &num, div); } break; |