new configuration macro 'l_mathlim' (simplifies some dependencies

on float type)

1 files changed, 10 insertions, 6 deletions

diff --git a/luaconf.h b/luaconf.h
index b5966a4d..5d8ce755 100644
--- a/luaconf.h
+++ b/luaconf.h
@@ -1,5 +1,5 @@
 /*
-** $Id: luaconf.h,v 1.249 2015/03/31 12:00:07 roberto Exp roberto $
+** $Id: luaconf.h,v 1.250 2015/04/03 18:41:57 roberto Exp roberto $
 ** Configuration file for Lua
 ** See Copyright Notice in lua.h
 */
@@ -404,16 +404,14 @@
 
 /*
 @@ LUA_NUMBER is the floating-point type used by Lua.
-**
 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
 @@ over a floating number.
-**
+@@ l_mathlim(x) corrects limit name 'x' to the proper float type
+** by prefixing it with one of FLT/DBL/LDBL.
 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
 @@ LUA_NUMBER_FMT is the format for writing floats.
 @@ lua_number2str converts a float to a string.
-**
 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
-**
 @@ lua_str2number converts a decimal numeric string to a number.
 */
 
@@ -421,6 +419,8 @@
 
 #define LUA_NUMBER      float
 
+#define l_mathlim(n)            (FLT_##n)
+
 #define LUAI_UACNUMBER  double
 
 #define LUA_NUMBER_FRMLEN       ""
@@ -435,6 +435,8 @@
 
 #define LUA_NUMBER      long double
 
+#define l_mathlim(n)            (LDBL_##n)
+
 #define LUAI_UACNUMBER  long double
 
 #define LUA_NUMBER_FRMLEN       "L"
@@ -448,6 +450,8 @@
 
 #define LUA_NUMBER      double
 
+#define l_mathlim(n)            (DBL_##n)
+
 #define LUAI_UACNUMBER  double
 
 #define LUA_NUMBER_FRMLEN       ""
@@ -620,7 +624,7 @@
 #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
     __STDC_VERSION__ >= 199901L
 #include <stdint.h>
-#if defined (INTPTR_MAX)  /* even in C99 this type is optional */
+#if defined(INTPTR_MAX)  /* even in C99 this type is optional */
 #undef LUA_KCONTEXT
 #define LUA_KCONTEXT    intptr_t
 #endif