add some missing prototypes

src/maths/dense/dense.c

@@ -8,6 +8,10 @@
 #include "ngspice/bool.h"
 #include "ngspice/iferrmsg.h"
 
+cplx cdet(CMat* M);
+double det(Mat* M);
+void resizecmat(CMat* A, int r, int c);
+
 void showmat(Mat* A) {
 	if (A->row > 0 && A->col > 0) {
 

src/spicelib/analysis/span.c

@@ -27,8 +27,11 @@
 #include "../maths/dense/dense.h"
 #include "../maths/dense/denseinlines.h"
 
-
-
+int CKTspnoise(CKTcircuit* ckt, int mode, int operation, Ndata* data, NOISEAN* noisean);
+int NInspIter(CKTcircuit* ckt, VSRCinstance* port);
+int initSPmatrix(CKTcircuit* ckt, int doNoise);
+void deleteSPmatrix(CKTcircuit* ckt);
+NOISEAN* SPcreateNoiseAnalysys(CKTcircuit* ckt);
 
 #define INIT_STATS() \
 do { \