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author | Rick Mark <rick.mark@coinbase.com> | 2021-04-01 12:29:21 -0700 |
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committer | Rick Mark <rick.mark@coinbase.com> | 2021-04-01 12:29:21 -0700 |
commit | 0321b1e945f89d08ab3632fe8bb3b7726086e9bb (patch) | |
tree | d3b22086f46eb438e1893ea28b3269dabf4ad902 /ext | |
parent | 69f89d4ae967f87e355dbbe05fbc039a083b6792 (diff) | |
download | ruby-openssl-0321b1e945f89d08ab3632fe8bb3b7726086e9bb.tar.gz |
BN.abs and BN uplus
Adds standard math abs fuction and revises uplus to return a duplicated object due to BN mutability
Diffstat (limited to 'ext')
-rw-r--r-- | ext/openssl/ossl_bn.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/ext/openssl/ossl_bn.c b/ext/openssl/ossl_bn.c index 1d43e457..ac3f8382 100644 --- a/ext/openssl/ossl_bn.c +++ b/ext/openssl/ossl_bn.c @@ -936,7 +936,17 @@ ossl_bn_copy(VALUE self, VALUE other) static VALUE ossl_bn_uplus(VALUE self) { - return self; + VALUE obj; + BIGNUM *bn1, *bn2; + + GetBN(self, bn1); + obj = NewBN(cBN); + bn2 = BN_dup(bn1); + if (!bn2) + ossl_raise(eBNError, "BN_dup"); + SetBN(obj, bn2); + + return obj; } /* @@ -960,6 +970,24 @@ ossl_bn_uminus(VALUE self) return obj; } +/* + * call-seq: + * bn.abs -> aBN + */ +static VALUE +ossl_bn_abs(VALUE self) +{ + BIGNUM *bn1; + + GetBN(self, bn1); + if (BN_is_negative(bn1)) { + return ossl_bn_uminus(self); + } + else { + return ossl_bn_uplus(self); + } +} + #define BIGNUM_CMP(func) \ static VALUE \ ossl_bn_##func(VALUE self, VALUE other) \ @@ -1176,6 +1204,7 @@ Init_ossl_bn(void) rb_define_method(cBN, "+@", ossl_bn_uplus, 0); rb_define_method(cBN, "-@", ossl_bn_uminus, 0); + rb_define_method(cBN, "abs", ossl_bn_abs, 0); rb_define_method(cBN, "+", ossl_bn_add, 1); rb_define_method(cBN, "-", ossl_bn_sub, 1); |