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BN_free.3
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.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32 .\" .\" Standard preamble: .\" ======================================================================== .de Sh \" Subsection heading .br .if t .Sp .ne 5 .PP \fB\\$1\fR .PP .. .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. | will give a .\" real vertical bar. \*(C+ will give a nicer C++. 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It erases the memory used by \fBa\fR and sets it to the value 0. .PP \&\fIBN_free()\fR frees the components of the \fB\s-1BIGNUM\s0\fR, and if it was created by \fIBN_new()\fR, also the structure itself. \fIBN_clear_free()\fR additionally overwrites the data before the memory is returned to the system. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fIBN_new()\fR returns a pointer to the \fB\s-1BIGNUM\s0\fR. If the allocation fails, it returns \fB\s-1NULL\s0\fR and sets an error code that can be obtained by \fIERR_get_error\fR\|(3). .PP \&\fIBN_init()\fR, \fIBN_clear()\fR, \fIBN_free()\fR and \fIBN_clear_free()\fR have no return values. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fIbn\fR\|(3), \fIERR_get_error\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" \&\fIBN_new()\fR, \fIBN_clear()\fR, \fIBN_free()\fR and \fIBN_clear_free()\fR are available in all versions on SSLeay and OpenSSL. \fIBN_init()\fR was added in SSLeay 0.9.1b.