From dde0e82eb7a5a5500e27071e344e8afe4e336049 Mon Sep 17 00:00:00 2001
From: cnlohr <lohr85@gmail.com>
Date: Sat, 11 Mar 2017 22:45:31 -0500
Subject: Update with almost working poser information stuff. This has been
 long stream to live. Goobye.

---
 redist/dclapack.h | 225 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 redist/linmath.h  |   1 +
 redist/lintest.c  |   3 +-
 3 files changed, 227 insertions(+), 2 deletions(-)
 create mode 100644 redist/dclapack.h

(limited to 'redist')

diff --git a/redist/dclapack.h b/redist/dclapack.h
new file mode 100644
index 0000000..4e209d3
--- /dev/null
+++ b/redist/dclapack.h
@@ -0,0 +1,225 @@
+#ifndef __DCLAPACK_H__
+#define __DCLAPACK_H__
+
+#ifndef ORDER
+#define ORDER 50
+#endif
+
+#ifndef FLOAT
+#define FLOAT float
+#endif
+
+#include<stdio.h>
+
+#define _ABS(a)  ( (a)<=0 ? 0-(a) : (a) )
+
+/*
+ * Prints a matrix A (n by m)
+ */
+#define PRINT(A,n,m) { \
+    int i,j; \
+    printf(#A "\n"); \
+    for (i=0; i<n; i++) { \
+        for (j=0; j<m; j++) { \
+            printf("%4.3f\t", A[i][j]); \
+        } \
+        printf("\n"); \
+    } \
+    printf("\n"); \
+} 
+
+/*
+ * Returns the identity matrix
+ */
+#define IDENTITY(I,n) { \
+    int i,j; \
+    for (i=0; i<n; i++) { \
+        for (j=0; j<i; j++) { I[i][j]=0.0f; } \
+        I[i][i] = 1.0f; \
+        for (j=i+1; j<n; j++) { I[i][j]=0.0f; } \
+    } \
+}
+
+/*
+ * B = Transpose(A)
+ *  A is (n by m)
+ *  B is (m by n)
+ */
+#define TRANSP(A,B,n,m) { \
+   int i,j; \
+   for (i=0; i<n; i++) { \
+      for (j=0; j<m; j++) { \
+         B[j][i] = A[i][j]; \
+      } \
+   } \
+}
+
+/*
+ * Calculate L,U of a matrix A with pivot table
+ */
+#define LU(A,L,U,Piv,n) { \
+    int i,j,k,_tempi; float _tempf; \
+    for (i=0; i<n; i++) { Piv[i]=i; } \
+    for (i=0; i<n; i++) { \
+        for (j=0; j<n; j++) { \
+            U[i][j] = A[i][j]; \
+        } \
+    } \
+    IDENTITY(L,n); \
+    \
+    for (i=0; i<n-1; i++) { \
+        \
+        int max=i; \
+	for (j=i+1; j<n; j++) { \
+		if (_ABS(U[j][i]) > _ABS(U[max][i])) { max = j; } \
+	} \
+	_tempi=Piv[i]; Piv[i]=Piv[max]; Piv[max]=_tempi; \
+	for (k=i; k<n; k++) { \
+		_tempf=U[i][k]; U[i][k]=U[max][k]; U[max][k]=_tempf; \
+	} \
+	for (k=0; k<i; k++) { \
+		_tempf=L[i][k]; L[i][k]=L[max][k]; L[max][k]=_tempf; \
+	} \
+        \
+        FLOAT invDiag = 1.0 / U[i][i]; \
+        for (j=i+1; j<n; j++) { \
+            FLOAT scale = U[j][i] * invDiag; \
+            U[j][i] = 0.0; \
+            for (k=i+1; k<n; k++) { U[j][k] -= U[i][k]*scale; } \
+            L[j][i] = scale; \
+        } \
+    } \
+}
+
+/*
+ * Pivots a matrix to a different matrix
+ *  B = Pivot(A) given table 'Piv'
+ *  A and B are (n by m)
+ */
+#define PIVOT(A,B,Piv,n,m) { \
+    int i,j; \
+    for (j=0; j<n; j++) { \
+        for (i=0; i<m; i++) { \
+            B[j][i] = A[Piv[j]][i]; \
+        } \
+    } \
+}
+
+/*
+ * Solve LX=B for matrix X and B
+ *  L is n by n (lower triangular)
+ *  B is n by m
+ */
+#define L_SUB(L,X,B,n,m) { \
+    int i,j,k; \
+    for (i=0; i<m; i++) { \
+        for (j=0; j<n; j++) { \
+            float sum=0.0; \
+            for (k=0; k<j; k++) { sum += L[j][k]*X[k][i]; } \
+            X[j][i] = (B[j][i] - sum) / L[j][j]; \
+        } \
+    } \
+}
+
+/*
+ * Solve UX=B for matrix X and B
+ *  U is n by n (upper triangular)
+ *  B is n by m
+ */
+#define U_SUB(U,X,B,n,m) { \
+    int i,j,k; \
+    for (i=0; i<m; i++) { \
+        for (j=n-1; j>=0; j--) { \
+            float sum=0.0; \
+            for (k=n-1; k>j; k--) { sum += U[j][k]*X[k][i]; } \
+            X[j][i] = (B[j][i] - sum) / U[j][j]; \
+        } \
+    } \
+}
+
+/*
+ * Inverts a matrix X (n by n) using the method of LU decomposition
+ */
+#define INV(A,Ainv,n) { \
+    FLOAT Ipiv[ORDER][ORDER]; \
+    FLOAT L[ORDER][ORDER]; \
+    FLOAT U[ORDER][ORDER]; \
+    FLOAT I[ORDER][ORDER]; \
+    FLOAT C[ORDER][ORDER]; \
+    int Piv[ORDER]; \
+    IDENTITY(I,n); \
+    LU(A,L,U,Piv,n); \
+    PIVOT(I,Ipiv,Piv,n,n); \
+    L_SUB(L,C,Ipiv,n,n); \
+    U_SUB(U,Ainv,C,n,n); \
+}
+
+/*
+PRINT(A,n,n); \
+PRINT(L,n,n); \
+PRINT(U,n,n); \
+MUL(L,U,LU,n,n,n);\
+PRINT(LU,n,n);\
+PRINT(C,n,n); \
+PRINT(Ainv,n,n); \
+*/
+
+/*
+ * Matrix Multiply C = A * B
+ *  A (n by m)
+ *  B (m by p)
+ *  C (n by p)
+ */
+#define MUL(A,B,C,n,m,p) { \
+    int i,j,k; \
+    for (i=0; i<n; i++) { \
+        for (j=0; j<p; j++) { \
+            C[i][j] = 0.0f; \
+            for (k=0; k<m; k++) { \
+                C[i][j] += A[i][k] * B[k][j]; \
+            } \
+        } \
+    } \
+}
+
+/*
+ * Matrix Multiply D = A * B + C
+ *  A (n by m)
+ *  B (m by p)
+ *  C (n by p)
+ *  D (n by p)
+ */
+#define MULADD(A,B,C,D,n,m,p) { \
+    int i,j,k; \
+    for (i=0; i<n; i++) { \
+        for (j=0; j<p; j++) { \
+            D[i][j] = C[i][j]; \
+            for (k=0; k<m; k++) { \
+                D[i][j] += A[i][k] * B[k][j]; \
+            } \
+        } \
+    } \
+}
+
+/*
+ * Matrix Multiply D = alpha * A * B + beta * C
+ *  A (n by m)
+ *  B (m by p)
+ *  C (n by p)
+ *  D (n by p)
+ */
+#define GMULADD(A,B,C,D,alpha,beta,n,m,p) { \
+    int i,j,k; \
+    float sum; \
+    for (i=0; i<n; i++) { \
+        for (j=0; j<p; j++) { \
+            sum = 0.0f; \
+            for (k=0; k<m; k++) { \
+                sum += A[i][k] * B[k][j]; \
+            } \
+            D[i][j] = alpha * sum + beta * C[i][j]; \
+        } \
+    } \
+}
+
+#endif
diff --git a/redist/linmath.h b/redist/linmath.h
index a58b2bf..aeaca46 100644
--- a/redist/linmath.h
+++ b/redist/linmath.h
@@ -92,6 +92,7 @@ void quatrotatevector( FLT * vec3out, const FLT * quat, const FLT * vec3in );
 void quatfrom2vectors(FLT *q, const FLT *src, const FLT *dest);
 
 //Poses are Position: [x, y, z]  Quaternion: [q, x, y, z]
+//XXX TODO Write these!
 void ApplyPoseToPoint( FLT * pout, const FLT * pin, const FLT * pose );
 void InvertPose( FLT * poseout, const FLT * pose );
 
diff --git a/redist/lintest.c b/redist/lintest.c
index 377824e..a767670 100644
--- a/redist/lintest.c
+++ b/redist/lintest.c
@@ -31,8 +31,7 @@ int main()
 	printf( "E: %f %f %f\n", e[0], e[1], e[2] );
 
 
-	FLT p[3] = { 0, 0, 1 };
-	printf( "%f %f %f\n", PFTHREE( p ) );
+	FLT pfromlh[3] = { 0, 1, 0 };
 	quatrotatevector( p, q, p );
 	printf( "%f %f %f\n", PFTHREE( p ) );
 	printf( "Flipping rotation\n" );
-- 
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