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field: Improve docs and tests of secp256k1_fe_set_b32

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Tim Ruffing
2023-02-01 12:26:57 +01:00
parent ca92a35d01
commit e9fd3dff76
2 changed files with 67 additions and 1 deletions
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src/field.h
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@@ -75,7 +75,9 @@ static int secp256k1_fe_equal_var(const secp256k1_fe *a, const secp256k1_fe *b);
/** Compare two field elements. Requires both inputs to be normalized */
static int secp256k1_fe_cmp_var(const secp256k1_fe *a, const secp256k1_fe *b);
/** Set a field element equal to 32-byte big endian value. If successful, the resulting field element is normalized. */
/** Set a field element equal to 32-byte big endian value.
* Returns 1 if no overflow occurred, and then the output is normalized.
* Returns 0 if overflow occurred, and then the output is only weakly normalized. */
static int secp256k1_fe_set_b32(secp256k1_fe *r, const unsigned char *a);
/** Convert a field element to a 32-byte big endian value. Requires the input to be normalized */