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//opt/cpanel/ea-openssl11/share/man/man3/BN_mod_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_add_word, BN_sub_word, BN_mul_word, BN_div_word, BN_mod_word \- arithmetic functions on BIGNUMs with integers .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/bn.h> \& \& int BN_add_word(BIGNUM *a, BN_ULONG w); \& \& int BN_sub_word(BIGNUM *a, BN_ULONG w); \& \& int BN_mul_word(BIGNUM *a, BN_ULONG w); \& \& BN_ULONG BN_div_word(BIGNUM *a, BN_ULONG w); \& \& BN_ULONG BN_mod_word(const BIGNUM *a, BN_ULONG w); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" These functions perform arithmetic operations on BIGNUMs with unsigned integers. They are much more efficient than the normal \s-1BIGNUM\s0 arithmetic operations. .PP \&\fIBN_add_word()\fR adds \fBw\fR to \fBa\fR (\f(CW\*(C`a+=w\*(C'\fR). .PP \&\fIBN_sub_word()\fR subtracts \fBw\fR from \fBa\fR (\f(CW\*(C`a\-=w\*(C'\fR). .PP \&\fIBN_mul_word()\fR multiplies \fBa\fR and \fBw\fR (\f(CW\*(C`a*=w\*(C'\fR). .PP \&\fIBN_div_word()\fR divides \fBa\fR by \fBw\fR (\f(CW\*(C`a/=w\*(C'\fR) and returns the remainder. .PP \&\fIBN_mod_word()\fR returns the remainder of \fBa\fR divided by \fBw\fR (\f(CW\*(C`a%w\*(C'\fR). .PP For \fIBN_div_word()\fR and \fIBN_mod_word()\fR, \fBw\fR must not be 0. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fIBN_add_word()\fR, \fIBN_sub_word()\fR and \fIBN_mul_word()\fR return 1 for success, 0 on error. The error codes can be obtained by \fIERR_get_error\fR\|(3). .PP \&\fIBN_mod_word()\fR and \fIBN_div_word()\fR return \fBa\fR%\fBw\fR on success and \&\fB(\s-1BN_ULONG\s0)\-1\fR if an error occurred. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fIERR_get_error\fR\|(3), \fIBN_add\fR\|(3) .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2000\-2017 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>.
