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Merge #550: Optimize secp256k1_fe_normalize_weak calls.

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9bd89c8 Optimize secp256k1_fe_normalize_weak calls. Move secp256k1_fe_normalize_weak calls out of ECMULT_TABLE_GET_GE and ECMULT_TABLE_GET_GE_STORAGE and into secp256k1_ge_globalz_set_table_gej instead. (Russell O'Connor)

Pull request description:

  Move secp256k1_fe_normalize_weak calls out of ECMULT_TABLE_GET_GE and ECMULT_TABLE_GET_GE_STORAGE and into secp256k1_ge_globalz_set_table_gej instead.

Tree-SHA512: 7bbb1aca8e37a268a26d7061bd1f390db129e697792f1d5ddd10ea34927616edc26ef118b500c3e5e14d1d463196033ef64e4d34b765380325c24835458b7a9b
This commit is contained in:
Gregory Maxwell
2019-02-21 04:11:07 +00:00
parent b408c6a8b2 9bd89c836b
commit 949e85b009
2 changed files with 5 additions and 2 deletions
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5
src/ecmult_impl.h
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@@ -277,7 +277,8 @@ static void secp256k1_ecmult_odd_multiples_table_storage_var(const int n, secp25
if ((n) > 0) { \
*(r) = (pre)[((n)-1)/2]; \
} else { \
secp256k1_ge_neg((r), &(pre)[(-(n)-1)/2]); \
*(r) = (pre)[(-(n)-1)/2]; \
secp256k1_fe_negate(&((r)->y), &((r)->y), 1); \
} \
} while(0)
@@ -289,7 +290,7 @@ static void secp256k1_ecmult_odd_multiples_table_storage_var(const int n, secp25
secp256k1_ge_from_storage((r), &(pre)[((n)-1)/2]); \
} else { \
secp256k1_ge_from_storage((r), &(pre)[(-(n)-1)/2]); \
secp256k1_ge_neg((r), (r)); \
secp256k1_fe_negate(&((r)->y), &((r)->y), 1); \
} \
} while(0)