// stb_sprintf - v1.10 - public domain snprintf() implementation
// originally by Jeff Roberts / RAD Game Tools, 2015/10/20
// http://github.com/nothings/stb
//
// allowed types:  sc uidBboXx p AaGgEef n
// lengths      :  hh h ll j z t I64 I32 I
//
// Contributors:
//    Fabian "ryg" Giesen (reformatting)
//    github:aganm (attribute format)
//
// Contributors (bugfixes):
//    github:d26435
//    github:trex78
//    github:account-login
//    Jari Komppa (SI suffixes)
//    Rohit Nirmal
//    Marcin Wojdyr
//    Leonard Ritter
//    Stefano Zanotti
//    Adam Allison
//    Arvid Gerstmann
//    Markus Kolb
//
// LICENSE:
//
//   See end of file for license information.

#ifndef STB_SPRINTF_H_INCLUDE
    #define STB_SPRINTF_H_INCLUDE
    #include <stdint.h>
/*
Single file sprintf replacement.

Originally written by Jeff Roberts at RAD Game Tools - 2015/10/20.
Hereby placed in public domain.

This is a full sprintf replacement that supports everything that
the C runtime sprintfs support, including float/double, 64-bit integers,
hex floats, field parameters (%*.*d stuff), length reads backs, etc.

Why would you need this if sprintf already exists?  Well, first off,
it's *much* faster (see below). It's also much smaller than the CRT
versions code-space-wise. We've also added some simple improvements
that are super handy (commas in thousands, callbacks at buffer full,
for example). Finally, the format strings for MSVC and GCC differ
for 64-bit integers (among other small things), so this lets you use
the same format strings in cross platform code.

It uses the standard single file trick of being both the header file
and the source itself. If you just include it normally, you just get
the header file function definitions. To get the code, you include
it from a C or C++ file and define STB_SPRINTF_IMPLEMENTATION first.

It only uses va_args macros from the C runtime to do it's work. It
does cast doubles to S64s and shifts and divides U64s, which does
drag in CRT code on most platforms.

It compiles to roughly 8K with float support, and 4K without.
As a comparison, when using MSVC static libs, calling sprintf drags
in 16K.

API:
====
int stbsp_sprintf( char * buf, char const * fmt, ... )
int stbsp_snprintf( char * buf, int count, char const * fmt, ... )
  Convert an arg list into a buffer.  stbsp_snprintf always returns
  a zero-terminated string (unlike regular snprintf).

int stbsp_vsprintf( char * buf, char const * fmt, va_list va )
int stbsp_vsnprintf( char * buf, int count, char const * fmt, va_list va )
  Convert a va_list arg list into a buffer.  stbsp_vsnprintf always returns
  a zero-terminated string (unlike regular snprintf).

int stbsp_vsprintfcb( STBSP_SPRINTFCB * callback, void * user, char * buf, char const * fmt, va_list va )
    typedef char * STBSP_SPRINTFCB( char const * buf, void * user, int len );
  Convert into a buffer, calling back every STB_SPRINTF_MIN chars.
  Your callback can then copy the chars out, print them or whatever.
  This function is actually the workhorse for everything else.
  The buffer you pass in must hold at least STB_SPRINTF_MIN characters.
    // you return the next buffer to use or 0 to stop converting

void stbsp_set_separators( char comma, char period )
  Set the comma and period characters to use.

FLOATS/DOUBLES:
===============
This code uses a internal float->ascii conversion method that uses
doubles with error correction (double-doubles, for ~105 bits of
precision).  This conversion is round-trip perfect - that is, an atof
of the values output here will give you the bit-exact double back.

One difference is that our insignificant digits will be different than
with MSVC or GCC (but they don't match each other either).  We also
don't attempt to find the minimum length matching float (pre-MSVC15
doesn't either).

If you don't need float or doubles at all, define STB_SPRINTF_NOFLOAT
and you'll save 4K of code space.

64-BIT INTS:
============
This library also supports 64-bit integers and you can use MSVC style or
GCC style indicators (%I64d or %lld).  It supports the C99 specifiers
for size_t and ptr_diff_t (%jd %zd) as well.

EXTRAS:
=======
Like some GCCs, for integers and floats, you can use a ' (single quote)
specifier and commas will be inserted on the thousands: "%'d" on 12345
would print 12,345.

For integers and floats, you can use a "$" specifier and the number
will be converted to float and then divided to get kilo, mega, giga or
tera and then printed, so "%$d" 1000 is "1.0 k", "%$.2d" 2536000 is
"2.53 M", etc. For byte values, use two $:s, like "%$$d" to turn
2536000 to "2.42 Mi". If you prefer JEDEC suffixes to SI ones, use three
$:s: "%$$$d" -> "2.42 M". To remove the space between the number and the
suffix, add "_" specifier: "%_$d" -> "2.53M".

In addition to octal and hexadecimal conversions, you can print
integers in binary: "%b" for 256 would print 100.

PERFORMANCE vs MSVC 2008 32-/64-bit (GCC is even slower than MSVC):
===================================================================
"%d" across all 32-bit ints (4.8x/4.0x faster than 32-/64-bit MSVC)
"%24d" across all 32-bit ints (4.5x/4.2x faster)
"%x" across all 32-bit ints (4.5x/3.8x faster)
"%08x" across all 32-bit ints (4.3x/3.8x faster)
"%f" across e-10 to e+10 floats (7.3x/6.0x faster)
"%e" across e-10 to e+10 floats (8.1x/6.0x faster)
"%g" across e-10 to e+10 floats (10.0x/7.1x faster)
"%f" for values near e-300 (7.9x/6.5x faster)
"%f" for values near e+300 (10.0x/9.1x faster)
"%e" for values near e-300 (10.1x/7.0x faster)
"%e" for values near e+300 (9.2x/6.0x faster)
"%.320f" for values near e-300 (12.6x/11.2x faster)
"%a" for random values (8.6x/4.3x faster)
"%I64d" for 64-bits with 32-bit values (4.8x/3.4x faster)
"%I64d" for 64-bits > 32-bit values (4.9x/5.5x faster)
"%s%s%s" for 64 char strings (7.1x/7.3x faster)
"...512 char string..." ( 35.0x/32.5x faster!)
*/

    #if defined(__clang__)
        #if defined(__has_feature) && defined(__has_attribute)
            #if __has_feature(address_sanitizer)
                #if __has_attribute(__no_sanitize__)
                    #define STBSP__ASAN __attribute__((__no_sanitize__("address")))
                #elif __has_attribute(__no_sanitize_address__)
                    #define STBSP__ASAN __attribute__((__no_sanitize_address__))
                #elif __has_attribute(__no_address_safety_analysis__)
                    #define STBSP__ASAN __attribute__((__no_address_safety_analysis__))
                #endif
            #endif
        #endif
    #elif defined(__GNUC__) && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
        #if defined(__SANITIZE_ADDRESS__) && __SANITIZE_ADDRESS__
            #define STBSP__ASAN __attribute__((__no_sanitize_address__))
        #endif
    #elif defined(_MSC_VER)
        #ifdef __SANITIZE_ADDRESS__
            #define STBSP__ASAN __declspec(no_sanitize_address)
        #endif
    #endif

    #ifndef STBSP__ASAN
        #define STBSP__ASAN
    #endif

    #ifdef STB_SPRINTF_STATIC
        #define STBSP__PUBLICDEC static
        #define STBSP__PUBLICDEF static STBSP__ASAN
    #else
        #ifdef __cplusplus
            #define STBSP__PUBLICDEC extern "C"
            #define STBSP__PUBLICDEF extern "C" STBSP__ASAN
        #else
            #define STBSP__PUBLICDEC extern
            #define STBSP__PUBLICDEF STBSP__ASAN
        #endif
    #endif

    #if defined(__has_attribute)
        #if __has_attribute(format)
            #define STBSP__ATTRIBUTE_FORMAT(fmt, va) __attribute__((format(printf, fmt, va)))
        #endif
    #endif

    #ifndef STBSP__ATTRIBUTE_FORMAT
        #define STBSP__ATTRIBUTE_FORMAT(fmt, va)
    #endif

    #ifdef _MSC_VER
        #define STBSP__NOTUSED(v) (void)(v)
    #else
        #define STBSP__NOTUSED(v) (void)sizeof(v)
    #endif

    #include <stdarg.h> // for va_arg(), va_list()
    #include <stddef.h> // size_t, ptrdiff_t

    #ifndef STB_SPRINTF_MIN
        #define STB_SPRINTF_MIN 512 // how many characters per callback
    #endif
typedef char *STBSP_SPRINTFCB(const char *buf, void *user, int len);

    #ifndef STB_SPRINTF_DECORATE
        #define STB_SPRINTF_DECORATE(name) stbsp_##name // define this before including if you want to change the names
    #endif

STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(vsprintf)(char *buf, char const *fmt, va_list va);
STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(vsnprintf)(char *buf, int count, char const *fmt, va_list va);
STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(sprintf)(char *buf, char const *fmt, ...) STBSP__ATTRIBUTE_FORMAT(2, 3);
STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(snprintf)(char *buf, int count, char const *fmt, ...) STBSP__ATTRIBUTE_FORMAT(3, 4);

STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(vsprintfcb)(STBSP_SPRINTFCB *callback, void *user, char *buf, char const *fmt, va_list va);
STBSP__PUBLICDEC void STB_SPRINTF_DECORATE(set_separators)(char comma, char period);

#endif // STB_SPRINTF_H_INCLUDE

/*
------------------------------------------------------------------------------
This software is available under 2 licenses -- choose whichever you prefer.
------------------------------------------------------------------------------
ALTERNATIVE A - MIT License
Copyright (c) 2017 Sean Barrett
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
------------------------------------------------------------------------------
ALTERNATIVE B - Public Domain (www.unlicense.org)
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
software, either in source code form or as a compiled binary, for any purpose,
commercial or non-commercial, and by any means.
In jurisdictions that recognize copyright laws, the author or authors of this
software dedicate any and all copyright interest in the software to the public
domain. We make this dedication for the benefit of the public at large and to
the detriment of our heirs and successors. We intend this dedication to be an
overt act of relinquishment in perpetuity of all present and future rights to
this software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------------------------------------------------
*/
