GEEKING

CSG/sgCore/Core/NURBS/MEMORY.cpp

@@ -0,0 +1,64 @@
+#include "../sg.h"
+
+/**********************************************************
+*  Free memory for matrix m x n
+*/
+void free_matrix( sgFloat **L, short n ){
+	while( n > 0 ) SGFree( L[--n] );
+	SGFree(L);
+}
+
+/**********************************************************
+* Expand memory for matrix m x n
+* m - number of rows
+* n - number of colomns
+* return =**L - if memory expand; or = NULL
+*/
+sgFloat ** mem_matrix( short m, short n ){
+	short i;
+	sgFloat **L;
+
+	if( (L = (sgFloat**)SGMalloc( sizeof(sgFloat*) * m) ) == NULL) goto err;
+	for( i = 0; i < m; i++ ) {
+		if( (L[i] = (sgFloat*)SGMalloc(sizeof(sgFloat) * n) ) == NULL ){
+			free_matrix( L, i );
+			goto err;
+		}
+	}
+	return L;
+err:
+	nurbs_handler_err(SPL_NO_MEMORY);
+	return NULL;
+}
+
+//-------------------------------------->>>>>>>>>>>>
+/**********************************************************
+*  Free memory for matrix m x n
+*/
+void free_matrix_point( lpD_POINT *L, short n ){
+	while( n > 0 ) SGFree( L[--n] );
+	SGFree(L);
+}
+
+/**********************************************************
+* Expand memory for matrix m x n
+* m - number of rows
+* n - number of colomns
+* return =**L - if memory expand; or = NULL
+*/
+lpD_POINT * mem_matrix_point( short m, short n ){
+	short i;
+	lpD_POINT *L;
+
+	if( (L = (D_POINT**)SGMalloc( sizeof(lpD_POINT) * m) ) == NULL) goto err;
+	for( i = 0; i < m; i++ ) {
+		if( (L[i] = (D_POINT*)SGMalloc(sizeof(D_POINT) * n) ) == NULL ){
+			free_matrix_point( L, i );
+			goto err;
+		}
+	}
+	return L;
+err:
+	nurbs_handler_err(SPL_NO_MEMORY);
+	return NULL;
+}