Added tng_compress trajectory compression algorithms

1 files changed, 33 insertions, 0 deletions

diff --git a/include/compression/widemuldiv.h b/include/compression/widemuldiv.h
new file mode 100644
index 0000000..b7574fa
--- /dev/null
+++ b/include/compression/widemuldiv.h
@@ -0,0 +1,33 @@
+/* This code is part of the tng compression routines.
+ *
+ * Written by Daniel Spangberg
+ * Copyright (c) 2010, 2013, The GROMACS development team.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ */
+
+
+#ifndef WIDEMULDIV_H
+#define WIDEMULDIV_H
+
+/* Multiply two 32 bit unsigned integers returning a 64 bit unsigned value (in two integers) */
+void Ptngc_widemul(unsigned int i1, unsigned int i2, unsigned int *ohi, unsigned int *olo);
+
+/* Divide a 64 bit unsigned value in hi:lo with the 32 bit value i and
+   return the result in result and the remainder in remainder */
+void Ptngc_widediv(unsigned int hi, unsigned int lo, unsigned int i, unsigned int *result, unsigned int *remainder);
+
+/* Add a unsigned int to a largeint. */
+void Ptngc_largeint_add(unsigned int v1, unsigned int *largeint, int n);
+
+/* Multiply v1 with largeint_in and return result in largeint_out */
+void Ptngc_largeint_mul(unsigned int v1, unsigned int *largeint_in, unsigned int *largeint_out, int n);
+
+/* Return the remainder from dividing largeint_in with v1. Result of the division is returned in largeint_out */
+unsigned int Ptngc_largeint_div(unsigned int v1, unsigned int *largeint_in, unsigned int *largeint_out, int n);
+
+#endif