38 lines
992 B
C
38 lines
992 B
C
#ifndef FE_H
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#define FE_H
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#include "pstdint.h"
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typedef int32_t fe[10];
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/*
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fe means field element.
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Here the field is \Z/(2^255-19).
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An element t, entries t[0]...t[9], represents the integer
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t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9].
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Bounds on each t[i] vary depending on context.
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*/
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extern void fe_frombytes(fe,const unsigned char *);
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extern void fe_tobytes(unsigned char *,const fe);
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extern void fe_copy(fe,const fe);
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extern int fe_isnonzero(const fe);
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extern int fe_isnegative(const fe);
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extern void fe_0(fe);
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extern void fe_1(fe);
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extern void fe_cswap(fe,fe,unsigned int);
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extern void fe_cmov(fe,const fe,unsigned int);
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extern void fe_add(fe,const fe,const fe);
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extern void fe_sub(fe,const fe,const fe);
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extern void fe_neg(fe,const fe);
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extern void fe_mul(fe,const fe,const fe);
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extern void fe_sq(fe,const fe);
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extern void fe_sq2(fe,const fe);
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extern void fe_mul121666(fe,const fe);
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extern void fe_invert(fe,const fe);
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extern void fe_pow22523(fe,const fe);
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#endif
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