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Support proper %g, %f, and %a float formatting

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See #61
See #104
This commit is contained in:
Justine Tunney 2021-03-05 10:31:16 -08:00
parent e26bdbec52
commit f064183646
48 changed files with 1034 additions and 921 deletions
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30
libc/fmt/pflink.h
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@ -1,6 +1,7 @@
#ifndef COSMOPOLITAN_LIBC_FMT_PFLINK_H_
#define COSMOPOLITAN_LIBC_FMT_PFLINK_H_
#include "libc/dce.h"
#include "libc/fmt/fmts.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
@ -17,19 +18,20 @@
* format strings are constexprs that only contain directives.
*/
#define PFLINK(FMT) \
({ \
if (___PFLINK(FMT, strpbrk, "cmrqs")) { \
if (___PFLINK(FMT, strchr, '#')) STATIC_YOINK("kCp437"); \
if (___PFLINK(FMT, strstr, "%m")) STATIC_YOINK("strerror"); \
if (!IsTiny() && (___PFLINK(FMT, strstr, "%*") || \
___PFLINK(FMT, strpbrk, "0123456789"))) { \
STATIC_YOINK("strnwidth"); \
STATIC_YOINK("strnwidth16"); \
STATIC_YOINK("wcsnwidth"); \
} \
} \
FMT; \
#define PFLINK(FMT) \
({ \
if (___PFLINK(FMT, strpbrk, "faAeEgG")) STATIC_YOINK("__fmt_dtoa"); \
if (___PFLINK(FMT, strpbrk, "cmrqs")) { \
if (___PFLINK(FMT, strchr, '#')) STATIC_YOINK("kCp437"); \
if (___PFLINK(FMT, strstr, "%m")) STATIC_YOINK("strerror"); \
if (!IsTiny() && (___PFLINK(FMT, strstr, "%*") || \
___PFLINK(FMT, strpbrk, "0123456789"))) { \
STATIC_YOINK("strnwidth"); \
STATIC_YOINK("strnwidth16"); \
STATIC_YOINK("wcsnwidth"); \
} \
} \
FMT; \
})
#define SFLINK(FMT) \
@ -67,6 +69,7 @@
#define SFLINK(FMT) FMT
#ifdef __GNUC__
__asm__(".section .yoink\n\t"
"nopl\t__fmt_dtoa(%rip)\n\t"
"nopl\tkCp437(%rip)\n\t"
"nopl\tstrerror(%rip)\n\t"
"nopl\tstrnwidth(%rip)\n\t"
@ -79,6 +82,7 @@ __asm__(".section .yoink\n\t"
#else
static long __pflink(long x) {
x |= kCp437[0];
x |= __fmt_dtoa(0, 0, 0, 0, 0, 0);
x |= strnwidth(0, 0, 0);
x |= strnwidth16(0, 0, 0);
x |= wcsnwidth(0, 0, 0);