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//opt/cpanel/ea-openssl11/share/man/man3/BN_get_word.3
.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28) .\" .\" Standard preamble: .\" ======================================================================== .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. \*(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" BN_zero, BN_one, BN_value_one, BN_set_word, BN_get_word \- BIGNUM assignment operations .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/bn.h> \& \& void BN_zero(BIGNUM *a); \& int BN_one(BIGNUM *a); \& \& const BIGNUM *BN_value_one(void); \& \& int BN_set_word(BIGNUM *a, BN_ULONG w); \& unsigned BN_ULONG BN_get_word(BIGNUM *a); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fB\s-1BN_ULONG\s0\fR is a macro that will be an unsigned integral type optimized for the most efficient implementation on the local platform. .PP \&\fIBN_zero()\fR, \fIBN_one()\fR and \fIBN_set_word()\fR set \fBa\fR to the values 0, 1 and \&\fBw\fR respectively. \fIBN_zero()\fR and \fIBN_one()\fR are macros. .PP \&\fIBN_value_one()\fR returns a \fB\s-1BIGNUM\s0\fR constant of value 1. This constant is useful for use in comparisons and assignment. .PP \&\fIBN_get_word()\fR returns \fBa\fR, if it can be represented as a \fB\s-1BN_ULONG\s0\fR. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fIBN_get_word()\fR returns the value \fBa\fR, or all-bits-set if \fBa\fR cannot be represented as a single integer. .PP \&\fIBN_one()\fR and \fIBN_set_word()\fR return 1 on success, 0 otherwise. \&\fIBN_value_one()\fR returns the constant. \&\fIBN_zero()\fR never fails and returns no value. .SH "BUGS" .IX Header "BUGS" If a \fB\s-1BIGNUM\s0\fR is equal to the value of all-bits-set, it will collide with the error condition returned by \fIBN_get_word()\fR which uses that as an error value. .PP \&\fB\s-1BN_ULONG\s0\fR should probably be a typedef. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fIBN_bn2bin\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" In OpenSSL 0.9.8, \fIBN_zero()\fR was changed to not return a value; previous versions returned an int. .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2000\-2018 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
