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- /*
- * File: dclxvi-20130329/scalar.h
- * Author: Ruben Niederhagen, Peter Schwabe
- * Public Domain
- */
- #ifndef SCALAR_H
- #define SCALAR_H
- #include <stdio.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- typedef unsigned long long scalar_t[4] ;
- void scalar_sub_nored(scalar_t r, scalar_t x, scalar_t y);
- void scalar_setrandom(scalar_t rop, const scalar_t bound);
- void scalar_set_lluarray(scalar_t rop, unsigned long long v[4]);
- int scalar_getbit(const scalar_t s, unsigned int pos);
- // Returns the position of the most significant set bit
- int scalar_scanb(const scalar_t s);
- int scalar_iszero_vartime(const scalar_t s);
- void scalar_window4(signed char r[64], const scalar_t s);
- int scalar_lt_vartime(const scalar_t a, const scalar_t b);
- void scalar_print(FILE *fh, const scalar_t t);
- #ifdef __cplusplus
- }
- #endif
- #endif
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