mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-18 05:57:44 +00:00
20 lines
315 B
C
20 lines
315 B
C
|
#include "fe.h"
|
||
|
|
#include "crypto_verify_32.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
return 1 if f == 0
|
||
|
|
return 0 if f != 0
|
||
|
|
|
||
|
|
Preconditions:
|
||
|
|
|f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static const unsigned char zero[32];
|
||
|
|
|
||
|
|
int fe_isnonzero(const fe f)
|
||
|
|
{
|
||
|
|
unsigned char s[32];
|
||
|
|
fe_tobytes(s,f);
|
||
|
|
return crypto_verify_32(s,zero);
|
||
|
|
}
|