Switch from OpenSSL 0.9.7d to 0.9.7e.
[dragonfly.git] / secure / lib / libcrypto / man / BN_cmp.3
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2''' $RCSfile$$Revision$$Date$
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34'''
35'''
36''' Set up \*(-- to give an unbreakable dash;
37''' string Tr holds user defined translation string.
38''' Bell System Logo is used as a dummy character.
39'''
984263bc 40.tr \(*W-|\(bv\*(Tr
984263bc 41.ie n \{\
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42.ds -- \(*W-
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45.if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
46.ds L" ""
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48''' \*(M", \*(S", \*(N" and \*(T" are the equivalent of
49''' \*(L" and \*(R", except that they are used on ".xx" lines,
50''' such as .IP and .SH, which do another additional levels of
51''' double-quote interpretation
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64.ds -- \(em\|
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80.\" If the F register is turned on, we'll generate
81.\" index entries out stderr for the following things:
82.\" TH Title
83.\" SH Header
84.\" Sh Subsection
85.\" Ip Item
86.\" X<> Xref (embedded
87.\" Of course, you have to process the output yourself
88.\" in some meaninful fashion.
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96.TH BN_cmp 3 "0.9.7d" "2/Sep/2004" "OpenSSL"
97.UC
98.if n .hy 0
984263bc 99.if n .na
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109..
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120.\}
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139.\}
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172\{\
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188.\}
189.rm #[ #] #H #V #F C
984263bc 190.SH "NAME"
74dab6c2 191BN_cmp, BN_ucmp, BN_is_zero, BN_is_one, BN_is_word, BN_is_odd \- BIGNUM comparison and test functions
984263bc 192.SH "SYNOPSIS"
74dab6c2 193.PP
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194.Vb 1
195\& #include <openssl/bn.h>
196.Ve
197.Vb 2
198\& int BN_cmp(BIGNUM *a, BIGNUM *b);
199\& int BN_ucmp(BIGNUM *a, BIGNUM *b);
200.Ve
201.Vb 4
202\& int BN_is_zero(BIGNUM *a);
203\& int BN_is_one(BIGNUM *a);
204\& int BN_is_word(BIGNUM *a, BN_ULONG w);
205\& int BN_is_odd(BIGNUM *a);
206.Ve
207.SH "DESCRIPTION"
74dab6c2 208\fIBN_cmp()\fR compares the numbers \fBa\fR and \fBb\fR. \fIBN_ucmp()\fR compares their
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209absolute values.
210.PP
74dab6c2 211\fIBN_is_zero()\fR, \fIBN_is_one()\fR and \fIBN_is_word()\fR test if \fBa\fR equals 0, 1,
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212or \fBw\fR respectively. \fIBN_is_odd()\fR tests if a is odd.
213.PP
74dab6c2 214\fIBN_is_zero()\fR, \fIBN_is_one()\fR, \fIBN_is_word()\fR and \fIBN_is_odd()\fR are macros.
984263bc 215.SH "RETURN VALUES"
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216\fIBN_cmp()\fR returns \-1 if \fBa\fR < \fBb\fR, 0 if \fBa\fR == \fBb\fR and 1 if
217\fBa\fR > \fBb\fR. \fIBN_ucmp()\fR is the same using the absolute values
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218of \fBa\fR and \fBb\fR.
219.PP
74dab6c2 220\fIBN_is_zero()\fR, \fIBN_is_one()\fR \fIBN_is_word()\fR and \fIBN_is_odd()\fR return 1 if
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221the condition is true, 0 otherwise.
222.SH "SEE ALSO"
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223bn(3)
224.SH "HISTORY"
74dab6c2 225\fIBN_cmp()\fR, \fIBN_ucmp()\fR, \fIBN_is_zero()\fR, \fIBN_is_one()\fR and \fIBN_is_word()\fR are
984263bc 226available in all versions of SSLeay and OpenSSL.
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227\fIBN_is_odd()\fR was added in SSLeay 0.8.
228
229.rn }` ''
230.IX Title "BN_cmp 3"
231.IX Name "BN_cmp, BN_ucmp, BN_is_zero, BN_is_one, BN_is_word, BN_is_odd - BIGNUM comparison and test functions"
232
233.IX Header "NAME"
234
235.IX Header "SYNOPSIS"
236
237.IX Header "DESCRIPTION"
238
239.IX Header "RETURN VALUES"
240
241.IX Header "SEE ALSO"
242
243.IX Header "HISTORY"
244