.TH "compack.c" 3 "Tue May 3 2022" "Version 1.6.4" "NCEPLIBS-g2c" \" -*- nroff -*-
.ad l
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.SH NAME
compack.c \- Pack up a data field using a complex packing algorithm as defined in the GRIB2 documention\&.  

.SH SYNOPSIS
.br
.PP
\fC#include <stdlib\&.h>\fP
.br
\fC#include <math\&.h>\fP
.br
\fC#include 'grib2\&.h'\fP
.br

.SS "Functions"

.in +1c
.ti -1c
.RI "void \fBcompack\fP (\fBg2float\fP *fld, \fBg2int\fP ndpts, \fBg2int\fP idrsnum, \fBg2int\fP *idrstmpl, unsigned char *cpack, \fBg2int\fP *lcpack)"
.br
.RI "This subroutine packs up a data field using a complex packing algorithm as defined in the GRIB2 documention\&. "
.in -1c
.SH "Detailed Description"
.PP 
Pack up a data field using a complex packing algorithm as defined in the GRIB2 documention\&. 


.PP
\fBAuthor\fP
.RS 4
Stephen Gilbert 
.RE
.PP
\fBDate\fP
.RS 4
2002-11-07 
.RE
.PP

.PP
Definition in file \fBcompack\&.c\fP\&.
.SH "Function Documentation"
.PP 
.SS "void compack (\fBg2float\fP * fld, \fBg2int\fP ndpts, \fBg2int\fP idrsnum, \fBg2int\fP * idrstmpl, unsigned char * cpack, \fBg2int\fP * lcpack)"

.PP
This subroutine packs up a data field using a complex packing algorithm as defined in the GRIB2 documention\&. It supports GRIB2 complex packing templates with or without spatial differences (i\&.e\&. DRTs 5\&.2 and 5\&.3)\&. It also fills in GRIB2 Data Representation Template 5\&.2 or 5\&.3 with the appropriate values\&.
.PP
\fBParameters\fP
.RS 4
\fIfld\fP Contains the data values to pack 
.br
\fIndpts\fP The number of data values in array fld 
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\fIidrsnum\fP Data Representation Template number 5\&.N Must equal 2 or 3\&.
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\fIidrstmpl\fP Contains the array of values for Data Representation Template 5\&.2 or 5\&.3\&.
.RE
.PP
.IP "\(bu" 2
0 Reference value - ignored on input, set my \fBcompack()\fP\&.
.IP "\(bu" 2
1 Binary Scale Factor
.IP "\(bu" 2
2 Decimal Scale Factor
.IP "\(bu" 2
6 Missing value management
.IP "\(bu" 2
7 Primary missing value
.IP "\(bu" 2
8 Secondary missing value
.IP "\(bu" 2
16 Order of Spatial Differencing ( 1 or 2 ) 
.PP
\fBParameters\fP
.RS 4
\fIcpack\fP The packed data field 
.br
\fIlcpack\fP length of packed field cpack\&.
.RE
.PP
\fBAuthor\fP
.RS 4
Stephen Gilbert 
.RE
.PP
\fBDate\fP
.RS 4
2002-11-07 
.RE
.PP

.PP

.PP
Definition at line 39 of file compack\&.c\&.
.PP
References int_power(), mkieee(), pack_gp(), sbit(), and sbits()\&.
.PP
Referenced by cmplxpack()\&.
.SH "Author"
.PP 
Generated automatically by Doxygen for NCEPLIBS-g2c from the source code\&.