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Diffstat (limited to 'include/compression/widemuldiv.h')
| -rw-r--r-- | include/compression/widemuldiv.h | 33 |
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 |