netinet{,6}: Assert in{,6}_inithead() are only used for system routing tables.
[dragonfly.git] / secure / lib / libcrypto / man / BN_cmp.3
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133.\" ========================================================================
134.\"
135.IX Title "BN_cmp 3"
7dc78669 136.TH BN_cmp 3 "2015-07-09" "1.0.1p" "OpenSSL"
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137.\" For nroff, turn off justification. Always turn off hyphenation; it makes
138.\" way too many mistakes in technical documents.
139.if n .ad l
140.nh
984263bc 141.SH "NAME"
74dab6c2 142BN_cmp, BN_ucmp, BN_is_zero, BN_is_one, BN_is_word, BN_is_odd \- BIGNUM comparison and test functions
984263bc 143.SH "SYNOPSIS"
8b0cefbb 144.IX Header "SYNOPSIS"
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145.Vb 1
146\& #include <openssl/bn.h>
e257b235 147\&
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148\& int BN_cmp(BIGNUM *a, BIGNUM *b);
149\& int BN_ucmp(BIGNUM *a, BIGNUM *b);
e257b235 150\&
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151\& int BN_is_zero(BIGNUM *a);
152\& int BN_is_one(BIGNUM *a);
153\& int BN_is_word(BIGNUM *a, BN_ULONG w);
154\& int BN_is_odd(BIGNUM *a);
155.Ve
156.SH "DESCRIPTION"
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157.IX Header "DESCRIPTION"
158\&\fIBN_cmp()\fR compares the numbers \fBa\fR and \fBb\fR. \fIBN_ucmp()\fR compares their
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159absolute values.
160.PP
8b0cefbb 161\&\fIBN_is_zero()\fR, \fIBN_is_one()\fR and \fIBN_is_word()\fR test if \fBa\fR equals 0, 1,
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162or \fBw\fR respectively. \fIBN_is_odd()\fR tests if a is odd.
163.PP
8b0cefbb 164\&\fIBN_is_zero()\fR, \fIBN_is_one()\fR, \fIBN_is_word()\fR and \fIBN_is_odd()\fR are macros.
984263bc 165.SH "RETURN VALUES"
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166.IX Header "RETURN VALUES"
167\&\fIBN_cmp()\fR returns \-1 if \fBa\fR < \fBb\fR, 0 if \fBa\fR == \fBb\fR and 1 if
168\&\fBa\fR > \fBb\fR. \fIBN_ucmp()\fR is the same using the absolute values
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169of \fBa\fR and \fBb\fR.
170.PP
8b0cefbb 171\&\fIBN_is_zero()\fR, \fIBN_is_one()\fR \fIBN_is_word()\fR and \fIBN_is_odd()\fR return 1 if
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172the condition is true, 0 otherwise.
173.SH "SEE ALSO"
74dab6c2 174.IX Header "SEE ALSO"
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175\&\fIbn\fR\|(3)
176.SH "HISTORY"
74dab6c2 177.IX Header "HISTORY"
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178\&\fIBN_cmp()\fR, \fIBN_ucmp()\fR, \fIBN_is_zero()\fR, \fIBN_is_one()\fR and \fIBN_is_word()\fR are
179available in all versions of SSLeay and OpenSSL.
180\&\fIBN_is_odd()\fR was added in SSLeay 0.8.