libzahl

big integer library
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ztrunc.3 (579B)

      1 .TH ZTRUNC 3 libzahl
      2 .SH NAME
      3 ztrunc - Truncate a big integer
      4 .SH SYNOPSIS
      5 .nf
      6 #include <zahl.h>
      7 
      8 void ztrunc(z_t \fIa\fP, z_t \fIb\fP, size_t \fIbits\fP);
      9 .fi
     10 .SH DESCRIPTION
     11 .B ztrunc
     12 makes a truncated copy of
     13 .I b
     14 and stores it in
     15 .IR a .
     16 Only the first
     17 .I bits
     18 from
     19 .I b
     20 and
     21 .IR b 's
     22 sign is copied to
     23 .IR a .
     24 .P
     25 It is safe to call
     26 .B zsplit
     27 with non-unique parameters.
     28 .SH RATIONALE
     29 This was useful for improving the performance of
     30 .BR zsplit (3).
     31 .SH SEE ALSO
     32 .BR zand (3),
     33 .BR zor (3),
     34 .BR zxor (3),
     35 .BR znot (3),
     36 .BR zlsh (3),
     37 .BR zrsh (3),
     38 .BR zsplit (3),
     39 .BR zbits (3)