INNER CODE UNIT · C

sizeof_pairing

StrobeLabs/eth.zig · src/crypto/blst/src/aggregate.c:63

static const size_t sizeof_pairing = (sizeof(PAIRING) + 7) & ~(size_t)7;

size_t blst_pairing_sizeof(void)
{   return sizeof_pairing;   }

void blst_pairing_init(PAIRING *ctx, int hash_or_encode,
                       const void *DST, size_t DST_len)
{
    ctx->ctrl = AGGR_UNDEFINED | (hash_or_encode ? AGGR_HASH_OR_ENCODE : 0);
    ctx->nelems = 0;
    ctx->DST = (uptr_t)DST==(uptr_t)((byte *)ctx+sizeof_pairing) ? (void *)42
                                                                 : DST;
    ctx->DST_len = DST_len;
}

static const void *pairing_get_dst(const PAIRING *ctx)
{   return (uptr_t)ctx->DST==(uptr_t)42 ? (const byte *)ctx+sizeof_pairing
                                        : ctx->DST;

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