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own implementation for 'string.format("%a")' for C89 platforms

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Roberto Ierusalimschy
2015-02-04 10:52:57 -02:00
parent 90d016980f
commit 8efcd411fe
2 changed files with 92 additions and 11 deletions
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16
luaconf.h
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@@ -1,5 +1,5 @@
/*
** $Id: luaconf.h,v 1.241 2015/01/16 17:15:52 roberto Exp roberto $
** $Id: luaconf.h,v 1.242 2015/01/16 17:26:56 roberto Exp roberto $
** Configuration file for Lua
** See Copyright Notice in lua.h
*/
@@ -598,7 +598,7 @@
/*
@@ lua_strx2number converts an hexadecimal numeric string to a number.
** In C99, 'strtod' does both conversions. Otherwise, you can
** In C99, 'strtod' does that conversion. Otherwise, you can
** leave 'lua_strx2number' undefined and Lua will provide its own
** implementation.
*/
@@ -608,12 +608,13 @@
/*
@@ LUA_USE_AFORMAT allows '%a'/'%A' specifiers in 'string.format'
** Enable it if the C function 'printf' supports these specifiers.
** (C99 demands it and Windows also supports it.)
@@ lua_number2strx converts a float to an hexadecimal numeric string.
** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
** provide its own implementation.
*/
#if !defined(LUA_USE_C89) || defined(LUA_USE_WINDOWS)
#define LUA_USE_AFORMAT
#if !defined(LUA_USE_C89)
#define lua_number2strx(L,b,f,n) sprintf(b,f,n)
#endif
@@ -699,7 +700,6 @@
#define LUAL_BUFFERSIZE 8192
#else
#define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
#endif
/* }================================================================== */