fix macros for C++ compilation

Source_c/BHIron2_v1.c

@@ -5,10 +5,10 @@
 #include <string.h>
 #ifdef _MSC_VER
 #define EXPORT __declspec(dllexport)
-#define LENGTH 33
 #else
 #define EXPORT
 #endif
+#define LENGTH 33
 
 static const char* error = NULL;
 
@@ -167,4 +167,4 @@ EXPORT int eval(const char* func,
 		error = "Unknown function";
 		return 0;
 	}
-}
\ No newline at end of file
+}

Source_c/CFUN_IcNb3Sn_HiLumi_v1.c

@@ -78,7 +78,7 @@ EXPORT int eval(const char *func,
 
 		   /* Mandatory constraint: 0.01 <= b <= 1 */
 		   bi=B/Bc2;
-		   bi=min(max(bi,Bmin),1);       
+		   bi=MIN(MAX(bi,Bmin),1);       
 
 		   /* Bordini's original fit: */
 		   c = (1-degr) * c0 * pow((1-pow(ti,p)),alpha) * pow((1-pow(ti,2)),alpha);
@@ -111,4 +111,4 @@ EXPORT int eval(const char *func,
     error = "Unknown function";
     return 0;
   }
-}
\ No newline at end of file
+}

Source_c/CFUN_IcNb3Sn_WithStress_v1.c

@@ -80,13 +80,13 @@ EXPORT int eval(const char *func,
 	   }	
 	   else {
 		   
-       ti=max(ti,tmin);
+       ti=MAX(ti,tmin);
        
        Bc2 = Bc20 * (1-pow(ti,p)); 
 
        /* Mandatory constraint: 0.01 <= b <= 1 */
        bi=B/Bc2;
-       bi=min(max(bi,Bmin),1);  
+       bi=MIN(MAX(bi,Bmin),1);  
 	   Sscaling = pow(1-pow((S/Smax),a), 0.5);
 
        /* Bordini's original fit: */
@@ -119,4 +119,4 @@ EXPORT int eval(const char *func,
     error = "Unknown function";
     return 0;
   }
-}
\ No newline at end of file
+}

Source_c/CFUN_IcNb3Sn_v1.c

@@ -72,13 +72,13 @@ EXPORT int eval(const char *func,
 	   }	
 	   else {
 		   
-       ti=max(ti,tmin);
+       ti=MAX(ti,tmin);
        
        Bc2 = Bc20 * (1-pow(ti,p)); 
 
        /* Mandatory constraint: 0.01 <= b <= 1 */
        bi=B/Bc2;
-       bi=min(max(bi,Bmin),1);       
+       bi=MIN(MAX(bi,Bmin),1);       
 
        /* Bordini's original fit: */
        c = (1-degr) * c0 * pow((1-pow(ti,p)),alpha) * pow((1-pow(ti,2)),alpha);
@@ -110,4 +110,4 @@ EXPORT int eval(const char *func,
     error = "Unknown function";
     return 0;
   }
-}
\ No newline at end of file
+}