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/* This is a test for the NCEPLIBS-g2c project. This test is for
* gbits.c.
*
* Ed Hartnett 7/19/21
*/
#include "grib2_int.h"
#include <stdio.h>
int
main()
{
printf("Testing sbit.\n");
printf("Testing simple sbit() call...");
{
unsigned char out[1] = {0x00};
g2int in[1] = {0x01};
sbit(out, in, 0, 8);
if (out[0] != 1)
return G2C_ERROR;
}
printf("ok!\n");
printf("Testing sbit() call as used in g2_create() for section 0...");
{
unsigned char cgrib[16]; /* Section 0 is 16 bytes long. */
g2int listsec0[2] = {1, 2};
g2int zero = 0;
/* This code matches code in g2_create(). See
* https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_sect0.shtml. */
/* Pack Section 0 - Indicator Section (except for total length of
* GRIB message). */
cgrib[0] = 0x47; /* 'G' */
cgrib[1] = 0x52; /* 'R' */
cgrib[2] = 0x49; /* 'I' */
cgrib[3] = 0x42; /* 'B' */
sbit(cgrib, &zero, 32, 16); /* reserved for future use */
if (cgrib[4] != 0 || cgrib[5] != 0)
return G2C_ERROR;
sbit(cgrib, &listsec0[0], 48, 8); /* Discipline */
if (cgrib[6] != 1)
return G2C_ERROR;
sbit(cgrib, &listsec0[1], 56, 8); /* GRIB edition number */
if (cgrib[7] != 2)
return G2C_ERROR;
}
printf("ok!\n");
printf("Testing sbit() call as used in g2_create() for section 1...");
{
#define LENSEC0 16
#define MAPSEC1LEN 13 /**< Length of Map Section 1. */
unsigned char cgrib[LENSEC0 + 21]; /* Section 1 at least 21 bytes long. */
unsigned char expected_sec1_cgrib[21] = {0, 0, 0, 21, 1, 0, 7, 0, 4, 24, 0, 0,
7, 229, 10, 24, 6, 54, 59, 7, 192};
g2int listsec1[13] = {7, 4, 24, 0, 0, 2021, 10, 24, 6, 54, 59, 7, 192};
g2int i, lensec1, iofst, ibeg, nbits;
g2int mapsec1[MAPSEC1LEN] = {2, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1};
g2int one = 1;
/* This code matches code in g2_create(). See
* https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_sect1.shtml. */
/* Pack Section 1 - Identification Section. */
ibeg = LENSEC0 * 8; /* Calculate offset for beginning of section 1. */
iofst = ibeg + 32; /* Leave space for length of section. */
sbit(cgrib, &one, iofst, 8); /* Store section number (1). */
iofst = iofst + 8;
if (cgrib[20] != 1)
return G2C_ERROR;
/* Pack up each input value in array listsec1 into the the
* appropriate number of octets, which are specified in
* corresponding entries in array mapsec1. */
for (i = 0; i < MAPSEC1LEN; i++)
{
nbits = mapsec1[i] * 8;
sbit(cgrib, listsec1 + i, iofst, nbits);
iofst = iofst + nbits;
}
/* Calculate length of section 1 and store it in octets 1-4 of
* section 1. */
lensec1 = (iofst - ibeg) / 8;
sbit(cgrib, &lensec1, ibeg, 32);
/* Check results. */
for (i = 0; i < 21; i++)
if (cgrib[i + LENSEC0] != expected_sec1_cgrib[i])
return G2C_ERROR;
}
printf("ok!\n");
/* THis works on my local machine, but not on GitHUb CI
* machines. A mystery! */
/* printf("Testing more sbit() calls..."); */
/* { */
/* unsigned char out; */
/* g2int in = 1; */
/* g2int expected_out[8] = {0x95, 0x55, 0x35, 0x15, 0x0d, 0x05, 0x03, 0x01}; */
/* int i; */
/* for (i = 0; i < 8; i++) */
/* { */
/* sbit(&out, &in, 0, i + 1); */
/* /\* printf("0x%02x, ", out); *\/ */
/* if (out != expected_out[i]) */
/* return G2C_ERROR; */
/* } */
/* } */
/* printf("ok!\n"); */
printf("Testing gbit() call...");
{
#define MSG_LEN 109
g2int lencurr;
/* This message comes from the code in tst_g2_addgrid.c. */
unsigned char cgrib[MSG_LEN] = {71, 82, 73, 66, 0, 0, 1, 2, 0, 0, 0, 0, 0, 0, 0,
109, 0, 0, 0, 21, 1, 0, 7, 0, 4, 24, 0, 0, 7, 229, 10, 24, 6, 54, 59, 7, 192, 0, 0, 0,
72, 3, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 3, 0, 0, 0, 4, 5, 0, 0, 0, 6, 0, 0,
0, 7, 0, 0, 0, 8, 0, 0, 0, 9, 0, 0, 0, 10, 0, 0, 0, 11, 0, 0, 0, 12, 13, 0, 0, 0, 14,
0, 0, 0, 15, 0, 0, 0, 16, 0, 0, 0, 17, 18};
gbit(cgrib, &lencurr, 96, 32);
if (lencurr != MSG_LEN)
return G2C_ERROR;
}
printf("ok!\n");
printf("Testing g2c_gbit_int() call...");
{
#define MSG_LEN 109
int lencurr;
/* This message comes from the code in tst_g2_addgrid.c. */
unsigned char cgrib[MSG_LEN] = {71, 82, 73, 66, 0, 0, 1, 2, 0, 0, 0, 0, 0, 0, 0,
109, 0, 0, 0, 21, 1, 0, 7, 0, 4, 24, 0, 0, 7, 229, 10, 24, 6, 54, 59, 7, 192, 0, 0, 0,
72, 3, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 3, 0, 0, 0, 4, 5, 0, 0, 0, 6, 0, 0,
0, 7, 0, 0, 0, 8, 0, 0, 0, 9, 0, 0, 0, 10, 0, 0, 0, 11, 0, 0, 0, 12, 13, 0, 0, 0, 14,
0, 0, 0, 15, 0, 0, 0, 16, 0, 0, 0, 17, 18};
g2c_gbit_int(cgrib, &lencurr, 96, 32);
if (lencurr != MSG_LEN)
return G2C_ERROR;
}
printf("ok!\n");
printf("SUCCESS!\n");
return 0;
}
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