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document mplogic functions

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aiju 2016-08-08 22:19:29 +02:00
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57
sys/man/2/mp
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@ -106,6 +106,27 @@ void mpleft(mpint *b, int shift, mpint *res)
void mpright(mpint *b, int shift, mpint *res) void mpright(mpint *b, int shift, mpint *res)
.PP .PP
.B .B
void mpand(mpint *b1, mpint *b2, mpint *res)
.PP
.B
void mpbic(mpint *b1, mpint *b2, mpint *res)
.PP
.B
void mpor(mpint *b1, mpint *b2, mpint *res)
.PP
.B
void mpnot(mpint *b, mpint *res)
.PP
.B
void mpxor(mpint *b1, mpint *b2, mpint *res)
.PP
.B
void mptrunc(mpint *b, int n, mpint *res)
.PP
.B
void mpxtend(mpint *b, int n, mpint *res)
.PP
.B
void mpmul(mpint *b1, mpint *b2, mpint *prod) void mpmul(mpint *b1, mpint *b2, mpint *prod)
.PP .PP
.B .B
@ -545,6 +566,42 @@ is assigned to
.IR res . .IR res .
.PD .PD
.PP .PP
Logical operations (treating negative numbers using two's complement):
.TF mpxtend_
.TP
.I mpand
.BR "res = b1 & b2" .
.TP
.I mpbic
.BR "res = b1 & ~b2" .
.TP
.I mpor
.BR "res = b1 | b2" .
.TP
.I mpxor
.BR "res = b1 ^ b2" .
.TP
.I mpnot
.BR "res = ~b1" .
.TP
.I mptrunc
truncates
.I b
to
.I n
bits and stores the result in
.IR res .
The result is never negative.
.TP
.I mpxtend
truncates
.I b
to
.I n
bits, sign extends the MSB and stores the result in
.IR res .
.PD
.PP
Modular arithmetic: Modular arithmetic:
.TF mpmodmul_ .TF mpmodmul_
.TP .TP