void rdhdl_c(int thandle,Const char *keyword,int8 *value,int8 defval)
/** rdhdl -- Read an integer*8-valued header variable. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine rdhdl(tno,keyword,value,default)
integer tno
character keyword*(*)
integer*8 value,default
Read an integer*8 valued header variable. Only supported on some
compilers. See comments in wrhdl
Input:
tno The file handle of the data set.
keyword The name of the header variable.
default The default value to return, if the header variable
is not found.
Output:
value The value of the header variable. This will be the default
value, if the variable is missing from the header. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
char s[ITEM_HDR_SIZE];
int iostat,length,offset,itemp;
/* Firstly assume the variable is missing. Try to get it. If successful
read it. */
*value = defval;
haccess_c(thandle,&item,keyword,"read",&iostat); if(iostat)return;
length = hsize_c(item);
if(length >= 0){
/* Determine the type of the value, and convert it to double precision. */
hreadb_c(item,s,0,ITEM_HDR_SIZE,&iostat); check(iostat);
iostat = 0;
if( !memcmp(s,int8_item, ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE, H_INT8_SIZE);
if(offset + H_INT8_SIZE == length)
hreadl_c(item,value,offset,H_INT8_SIZE,&iostat);
} else if ( !memcmp(s,int_item, ITEM_HDR_SIZE)){
/* this is to cover old style MIR3 files that were using int4's */
offset = mroundup(ITEM_HDR_SIZE, H_INT_SIZE);
if(offset + H_INT_SIZE == length) {
hreadi_c(item,&itemp,offset,H_INT_SIZE,&iostat);
*value = itemp;
}
} else
bugv_c('f',"rdhdl_c: item %s not an int8 or small enough int4",keyword);
check(iostat);
}
hdaccess_c(item,&iostat); check(iostat);
}
void wrhdc_c(int thandle,Const char *keyword,Const float *value)
/** wrhdc -- Write a complex-valued header variable. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine wrhdc(tno,keyword,value)
integer tno
character keyword*(*)
complex value
Write a complex valued header variable.
Input:
tno The file handle fo the data set.
keyword The name of the header variable.
value The complex value of the header variable. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
int iostat,offset;
haccess_c(thandle,&item,keyword,"write",&iostat); check(iostat);
hwriteb_c(item,cmplx_item,0,ITEM_HDR_SIZE,&iostat); check(iostat);
offset = mroundup(ITEM_HDR_SIZE,H_CMPLX_SIZE);
hwritec_c(item,value,offset,H_CMPLX_SIZE,&iostat); check(iostat);
hdaccess_c(item,&iostat); check(iostat);
}
void wrhda_c(int thandle,Const char *keyword,Const char *value)
/** wrhda -- Write a string-valued header variable. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine wrhda(tno,keyword,value)
integer tno
character keyword*(*)
character value*(*)
Write a string valued header variable.
Input:
tno The file handle of the data set.
keyword The name of the header variable.
value The value of the header variable. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
int iostat;
haccess_c(thandle,&item,keyword,"write",&iostat); check(iostat);
hwriteb_c(item,char_item,0,ITEM_HDR_SIZE,&iostat); check(iostat);
hwriteb_c(item,(char *)value,ITEM_HDR_SIZE,
strlen(value),&iostat); check(iostat);
hdaccess_c(item,&iostat); check(iostat);
}
void wrhdl_c(int thandle,Const char *keyword,int8 value)
/** wrhdl -- Write an integer*8 valued header variable. */
/*& pjt */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine wrhdl(tno,keyword,value)
integer tno
character keyword*(*)
integer*8 value
Write an integer*8 valued header variable. This is only supported
on compilers that know how to handle integer*8 (e.g. gnu, intel).
Without this support, some files in miriad will be limited to
8 GB.
Input:
tno The handle of the data set.
keyword The name of the header variable.
value The integer*8 value of the header variable. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
int iostat,offset;
/* Sault proposes to write an INT if below 2^31, else INT8 */
haccess_c(thandle,&item,keyword,"write",&iostat); check(iostat);
hwriteb_c(item,int8_item,0,ITEM_HDR_SIZE,&iostat); check(iostat);
offset = mroundup(ITEM_HDR_SIZE,H_INT8_SIZE);
hwritel_c(item,&value,offset,H_INT8_SIZE,&iostat); check(iostat);
hdaccess_c(item,&iostat); check(iostat);
}
void wrhdi_c(int thandle,Const char *keyword,int value)
/** wrhdi -- Write an integer valued header variable. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine wrhdi(tno,keyword,value)
integer tno
character keyword*(*)
integer value
Write an integer valued header variable.
Input:
tno The handle of the data set.
keyword The name of the header variable.
value The integer value of the header variable. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
int iostat,offset;
haccess_c(thandle,&item,keyword,"write",&iostat); check(iostat);
hwriteb_c(item,int_item,0,ITEM_HDR_SIZE,&iostat); check(iostat);
offset = mroundup(ITEM_HDR_SIZE,H_INT_SIZE);
hwritei_c(item,&value,offset,H_INT_SIZE,&iostat); check(iostat);
hdaccess_c(item,&iostat); check(iostat);
}
void wrhdd_c(int thandle,Const char *keyword,double value)
/** wrhdd -- Write a double precision valued header variable. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine wrhdd(tno,keyword,value)
integer tno
character keyword*(*)
double precision value
Write the value of a header variable which has a double precision value.
Input:
tno The handle of the data set.
keyword Name to the keyword.
value The double precision value. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
int iostat,offset;
haccess_c(thandle,&item,keyword,"write",&iostat); check(iostat);
hwriteb_c(item,dble_item,0,ITEM_HDR_SIZE,&iostat); check(iostat);
offset = mroundup(ITEM_HDR_SIZE,H_DBLE_SIZE);
hwrited_c(item,&value,offset,H_DBLE_SIZE,&iostat); check(iostat);
hdaccess_c(item,&iostat); check(iostat);
}
void wrhdr_c(int thandle,Const char *keyword,double value)
/** wrhdr -- Write a real valued header variable. */
/*& pjt */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine wrhdr(tno,keyword,value)
integer tno
character keyword*(*)
real value
This writes a real-valued header keyword.
Input:
tno Handle of the data set.
keyword Name of the keyword to write.
value The value of the keyword. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
float temp;
int iostat,offset;
temp = value;
haccess_c(thandle,&item,keyword,"write",&iostat); check(iostat);
hwriteb_c(item,real_item,0,ITEM_HDR_SIZE,&iostat); check(iostat);
offset = mroundup(ITEM_HDR_SIZE,H_REAL_SIZE);
hwriter_c(item,&temp,offset,H_REAL_SIZE,&iostat); check(iostat);
hdaccess_c(item,&iostat); check(iostat);
}
// A thin wrapper over haccess_c
PyObject * UVObject_haccess(UVObject *self, PyObject *args) {
char *name, *mode;
int item_hdl, iostat;
if (!PyArg_ParseTuple(args, "ss", &name, &mode)) return NULL;
try {
haccess_c(self->tno, &item_hdl, name, mode, &iostat);
CHK_IO(iostat);
return PyInt_FromLong(item_hdl);
} catch (MiriadError &e) {
PyErr_Format(PyExc_RuntimeError, e.get_message());
return NULL;
}
}
void rdhda_c(int thandle,Const char *keyword,char *value,Const char *defval,int len)
/** rdhda -- Read a string-valued header variable. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine rdhda(tno,keyword,value,default)
integer tno
character keyword*(*)
character value*(*),default*(*)
Read a string valued header variable.
Input:
tno The file handle of the data set.
keyword The name of the header variable.
default The default value to return, if the header variable
is not found.
Output:
value The value of the header variable. This will be the default
value, if the variable is missing from the header. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
char s[ITEM_HDR_SIZE];
int iostat,dodef,length=0;
/* Firstly assume the variable is missing. Try to get it. If successful
read it. */
dodef = TRUE;
haccess_c(thandle,&item,keyword,"read",&iostat);
if(! iostat) {
length = min( hsize_c(item) - ITEM_HDR_SIZE, len - 1);
if(length > 0) {
hreadb_c(item,s,0,ITEM_HDR_SIZE,&iostat); check(iostat);
if(!memcmp(s,char_item,ITEM_HDR_SIZE)){
hreadb_c(item,value,ITEM_HDR_SIZE,length,&iostat); check(iostat);
dodef = FALSE;
}
}
hdaccess_c(item,&iostat); check(iostat);
}
if( dodef ) {
length = min(strlen(defval),len-1);
memcpy(value,defval,length);
}
*(value+length) = 0;
}
void hdcopy_c(int tin,int tout,Const char *keyword)
/** hdcopy -- Copy a headfer variable from one data set to another. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine hdcopy(tin,tout,keyword)
integer tin,tout
character keyword*(*)
Copy a header item from one data set to another.
Input:
tin File handle of the input data set.
tout File handle of the output data set.
keyword Name of the header variable to be copied. */
/*-- */
/*----------------------------------------------------------------------*/
{
char buf[MAXSIZE];
int item_in,item_out;
int length,offset,iostat,size;
haccess_c(tin,&item_in,keyword,"read",&iostat); if(iostat)return;
haccess_c(tout,&item_out,keyword,"write",&iostat); check(iostat);
size = hsize_c(item_in);
offset = 0;
while(offset < size){
length = min(size - offset, sizeof(buf));
hreadb_c(item_in,buf,offset,length,&iostat); check(iostat);
hwriteb_c(item_out,buf,offset,length,&iostat); check(iostat);
offset += length;
}
hdaccess_c(item_in,&iostat); check(iostat);
hdaccess_c(item_out,&iostat); check(iostat);
}
void rdhdc_c(int thandle,Const char *keyword,float *value,Const float *defval)
/** rdhdc -- Read a complex-valued header variable. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine rdhdc(tno,keyword,value,default)
integer tno
character keyword*(*)
complex value,default
Read a complex valued header variable.
Input:
tno The file handle of the data set.
keyword The name of the header variable.
default The default value to return, if the header variable
is not found.
Output:
value The value of the header variable. This will be the default
value, if the variable is missing from the header. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
char s[ITEM_HDR_SIZE];
int iostat,length,offset;
/* Firstly assume the variable is missing. Try to get it. If successful
read it. */
*value = *defval;
*(value+1) = *(defval+1);
haccess_c(thandle,&item,keyword,"read",&iostat); if(iostat)return;
offset = mroundup(ITEM_HDR_SIZE,H_CMPLX_SIZE);
length = hsize_c(item) - offset;
if(length == H_CMPLX_SIZE){
hreadb_c(item,s,0,ITEM_HDR_SIZE,&iostat); check(iostat);
iostat = 0;
if(!memcmp(s,cmplx_item, ITEM_HDR_SIZE)){
hreadc_c(item,value,offset,H_CMPLX_SIZE,&iostat);
}
check(iostat);
}
hdaccess_c(item,&iostat); check(iostat);
}
void hisopen_c(int tno,Const char *status)
/** hisopen -- Open the history file. */
/*& pjt */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine hisopen(tno,status)
integer tno
character status
This opens the history file, and readies it to be read or written.
Inputs:
tno The handle of the open data set.
status Either "read", "write" or "append". */
/*-- */
/*----------------------------------------------------------------------*/
{
int iostat;
haccess_c(tno,&history[tno],"history",status,&iostat);
if(iostat) {bug_c('e',"Problem with history item");};
check(iostat);
}
void scropen_c(int *handle)
/**scropen -- Open a scratch file. */
/*:scratch-i/o */
/*+ FORTRAN call sequence:
subroutine scropen(tno)
integer tno
This opens a scratch file, and readies it for use.
Output:
tno The handle of the scratch file. */
/*-- */
/*----------------------------------------------------------------------*/
{
int iostat;
char name[32];
(void)sprintf(name,"scratch%d",number++);
haccess_c(0,handle,name,"scratch",&iostat);
if(iostat){
bug_c( 'w',"Error opening scratch file");
bugno_c('f',iostat);
}
}
void xyopen_c(int *thandle,Const char *name,Const char *status,int naxis,int *axes)
/**xyopen -- Open an image file. */
/*:image-i/o */
/*+ FORTRAN call sequence:
subroutine xyopen(tno,name,status,naxis,axes)
integer tno,naxis,axes(naxis)
character name*(*),status*(*)
This opens an image file. For an old file, determine the size of
each axe. For a new file, it writes out this info.
Input:
name The name of the file to be opened.
status Either 'old', 'new' or 'append'.
naxis The maximum number of axes that the calling program can
handle. For an 'old' file, if the data file has fewer
than naxis axes, the higher dimensions are treated as having
only one element. If the data file has more than naxis
axes, and the higher dimensions are more than 1 element
deep, xyopen bombs out.
Input or Output:
axes This is input for status='new' and output for status='old'.
It gives the number of elements along each axis.
Output:
tno The handle of the output file. */
/*----------------------------------------------------------------------*/
{
int iostat,length,access,tno,i,ndim,npix,temp;
char *stat,*mode,naxes[16],s[ITEM_HDR_SIZE];
if(!strcmp("old",status)) { access = OLD; mode = "read"; stat = "old";}
else if(!strcmp("append",status)){ access = OLD; mode = "append";stat = "old";}
else if(!strcmp("new",status)) { access = NEW; mode = "write"; stat = "new";}
else
ERROR('f',(message,"Unrecognised status when opening %s, in XYOPEN",name));
/* Access the image data. */
hopen_c(&tno,name,stat,&iostat);
CHECK(iostat,(message,"Error opening %s, in XYOPEN",name));
haccess_c(tno,&(images[tno].image),"image",mode,&iostat);
CHECK(iostat,(message,"Error accessing pixel data of %s, in XYOPEN",name));
/*----------------------------------------------------------------------*/
/* */
/* Handle an old image. Get number of axes, and then the length */
/* of each axis. Also compute and check that the size of the */
/* image file looks OK. */
/* */
/*----------------------------------------------------------------------*/
if(access == OLD){
rdhdi_c(tno,"naxis",&ndim,0);
if(ndim <= 0 || ndim > MAXNAX)
ERROR('f',(message,"Bad number of dimensions for %s in XYOPEN",name));
Strcpy(naxes,"naxis0");
length = strlen(naxes) - 1;
npix = 1;
for(i=0; i<max(ndim,naxis); i++){
naxes[length] ++;
if(i < ndim) rdhdi_c(tno,naxes,&temp,0);
else temp = 1;
if(temp <= 0)
ERROR('f',(message,"Bad image dimension for %s, in XYOPEN",name));
npix = npix * temp;
if(i < naxis) axes[i] = temp;
else if(temp > 1)
ERROR('f',(message,"Too many dimensions for %s, in XYOPEN",name));
}
/* Check the file size if OK and that it starts with the "real_item"
sequence. */
if(hsize_c(images[tno].image) < H_REAL_SIZE*npix+ITEM_HDR_SIZE)
ERROR('f',(message,"Pixel data for %s appears too small, in XYOPEN",name));
hreadb_c(images[tno].image,s,0,ITEM_HDR_SIZE,&iostat);
CHECK(iostat,(message,"Error reading pixel data label for %s, in XYOPEN",name));
if( memcmp(s,real_item,ITEM_HDR_SIZE) )
ERROR('f',(message,"Bad pixel data label for %s, in XYOPEN",name));
/*----------------------------------------------------------------------*/
/* */
/* A new image. Write out all the axes infomation, and initialise */
/* the file with the "binary item" sequence. */
/* */
/*----------------------------------------------------------------------*/
} else {
wrhdi_c(tno,"naxis",naxis);
Strcpy(naxes,"naxis0");
length = strlen(naxes) - 1;
for(i=0; i < naxis; i++){
naxes[length] ++;
wrhdi_c(tno,naxes,axes[i]);
}
hwriteb_c(images[tno].image,real_item,0,ITEM_HDR_SIZE,&iostat);
CHECK(iostat,(message,"Error writing pixel data label for %s, in XYOPEN",name));
}
/* Common to old and new. Copy the dimension info to the local description. */
images[tno].offset = 0;
images[tno].naxis = naxis;
for(i=0; i < naxis; i++) images[tno].axes[i] = axes[i];
for(i = naxis; i < MAXNAX; i++) images[tno].axes[i] = 1;
images[tno].mask = NULL;
images[tno].image_exists = TRUE;
images[tno].mask_exists = TRUE;
*thandle = tno;
}
void hdprobe_c(int tno,Const char *keyword,char *descr,size_t length,char *type,int *n)
/** hdprobe -- Determine characteristics of a header variable. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine hdprobe(tno,keyword,descr,type,n)
integer tno
character keyword*(*),descr*(*),type*(*)
integer n
Determine characteristics of a particular header variable.
Inputs:
tno Handle of the data set.
keyword Name of the header variable to probe.
Outputs:
descr A formatted version of the item. For single numerics or
short strings, this is the ascii encoding of the value. For
large items, this is some message describing the item.
type One of:
'nonexistent'
'integer*2'
'integer*8'
'integer'
'real'
'double'
'complex'
'character'
'text'
'binary'
n Number of elements in the item. Zero implies an error. One
implies that "descr" is the ascii encoding of the value. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
char s[ITEM_HDR_SIZE],buf[MAXSIZE];
float rtemp,ctemp[2];
int iostat,unknown,size,i,itemp,offset,bufit;
double dtemp;
int2 jtemp;
int8 ltemp;
haccess_c(tno,&item,keyword,"read",&iostat);
*n = 0;
bufit = 0;
Strcpy(type,"nonexistent"); if(iostat)return;
size = hsize_c(item);
unknown = FALSE;
if(size <= ITEM_HDR_SIZE){
unknown = TRUE;
size -= ITEM_HDR_SIZE;
} else {
hreadb_c(item,s,0,ITEM_HDR_SIZE,&iostat); check(iostat);
if(!memcmp(s,real_item,ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE,H_REAL_SIZE);
size -= offset;
Strcpy(type,"real");
*n = size / H_REAL_SIZE;
if(size % H_REAL_SIZE) unknown = TRUE;
else if(size == H_REAL_SIZE){
hreadr_c(item,&rtemp,offset,H_REAL_SIZE,&iostat); check(iostat);
Sprintf(buf,"%-14.7g",rtemp);
bufit = 1;
}
} else if(!memcmp(s,int_item,ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE,H_INT_SIZE);
size -= offset;
Strcpy(type,"integer");
*n = size / H_INT_SIZE;
if(size % H_INT_SIZE) unknown = TRUE;
else if(size == H_INT_SIZE){
hreadi_c(item,&itemp,offset,H_INT_SIZE,&iostat); check(iostat);
Sprintf(buf,"%d",itemp);
bufit = 1;
}
} else if(!memcmp(s,int2_item,ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE,H_INT2_SIZE);
size -= offset;
Strcpy(type,"integer*2");
*n = size / H_INT2_SIZE;
if(size % H_INT2_SIZE) unknown = TRUE;
else if(size == H_INT2_SIZE){
hreadj_c(item,&jtemp,offset,H_INT2_SIZE,&iostat); check(iostat);
Sprintf(buf,"%d",jtemp);
bufit = 1;
}
} else if(!memcmp(s,int8_item,ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE,H_INT8_SIZE);
size -= offset;
Strcpy(type,"integer*8");
*n = size / H_INT8_SIZE;
if(size % H_INT8_SIZE) unknown = TRUE;
else if(size == H_INT8_SIZE){
hreadl_c(item,<emp,offset,H_INT8_SIZE,&iostat); check(iostat);
Sprintf(buf,"%lld",ltemp);
bufit = 1;
}
} else if(!memcmp(s,dble_item,ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE,H_DBLE_SIZE);
size -= offset;
Strcpy(type,"double");
*n = size / H_DBLE_SIZE;
if(size % H_DBLE_SIZE) unknown = TRUE;
else if(size == H_DBLE_SIZE){
hreadd_c(item,&dtemp,offset,H_DBLE_SIZE,&iostat); check(iostat);
Sprintf(buf,"%-20.10g",dtemp);
bufit = 1;
}
} else if(!memcmp(s,cmplx_item,ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE,H_CMPLX_SIZE);
size -= offset;
Strcpy(type,"complex");
*n = size / H_CMPLX_SIZE;
if(size % H_CMPLX_SIZE) unknown = TRUE;
else if(size == H_CMPLX_SIZE){
hreadr_c(item,ctemp,offset,H_CMPLX_SIZE,&iostat); check(iostat);
Sprintf(buf,"(%-14.7g,%-14.7g)",ctemp[0],ctemp[1]);
bufit = 1;
}
} else if(!memcmp(s,char_item,ITEM_HDR_SIZE)){
offset = ITEM_HDR_SIZE;
size -= offset;
size = min(size,MAXSIZE-1);
*n = 1;
Strcpy(type,"character");
hreadb_c(item,buf,ITEM_HDR_SIZE,size,&iostat); check(iostat);
*(buf+size) = 0;
bufit = 1;
} else if(!memcmp(s,binary_item,ITEM_HDR_SIZE)){
*n = size;
Strcpy(type,"binary");
} else{
Strcpy(type,"text");
*n = size + ITEM_HDR_SIZE;
for(i=0; i < ITEM_HDR_SIZE; i++)
if(!isspace(*(s+i)) && !isprint(*(s+i)))unknown = TRUE;
}
}
hdaccess_c(item,&iostat); check(iostat);
if(unknown){
Strcpy(type,"unknown");
*n = size + ITEM_HDR_SIZE;
} else if(bufit){
if(strlen(buf) > length - 1)
bugv_c('f',"Descr buffer overflow in hdprobe for %s",keyword);
strcpy(descr,buf);
}
}
void rdhdd_c(int thandle,Const char *keyword,double *value,double defval)
/** rdhdd -- Read a double precision-valued header variable. */
/*& mjs */
/*: header-i/o */
/*+ FORTRAN call sequence:
subroutine rdhdd(tno,keyword,value,default)
integer tno
character keyword*(*)
double precision value,default
Read a double precision valued header variable.
Input:
tno The file handle of the data set.
keyword The name of the header variable.
default The default value to return, if the header variable
is not found.
Output:
value The value of the header variable. This will be the default
value, if the variable is missing from the header. */
/*-- */
/*----------------------------------------------------------------------*/
{
int item;
char s[ITEM_HDR_SIZE];
int iostat,length,itemp,offset;
float rtemp;
/* Firstly assume the variable is missing. Try to get it. If successful
read it. */
*value = defval;
haccess_c(thandle,&item,keyword,"read",&iostat); if(iostat)return;
length = hsize_c(item);
if(length >= 0){
/* Determine the type of the value, and convert it to double precision. */
hreadb_c(item,s,0,ITEM_HDR_SIZE,&iostat); check(iostat);
iostat = 0;
if( !memcmp(s,int_item, ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE,H_INT_SIZE);
if(offset + H_INT_SIZE == length){
hreadi_c(item,&itemp,offset,H_INT_SIZE,&iostat);
*value = itemp;
}
} else if(!memcmp(s,real_item,ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE,H_REAL_SIZE);
if(offset + H_REAL_SIZE == length){
hreadr_c(item,&rtemp,offset,H_REAL_SIZE,&iostat);
*value = rtemp;
}
} else if(!memcmp(s,dble_item,ITEM_HDR_SIZE)){
offset = mroundup(ITEM_HDR_SIZE,H_DBLE_SIZE);
if(offset + H_DBLE_SIZE == length){
hreadd_c(item,value, offset,H_DBLE_SIZE,&iostat);
}
}
#if 0
/* can't do this: some routines, e.g. imhead, actually depend
* on it falling through. Sick, but true
*/
else
bugv_c('f',"rdhdd_c: keyword %s not covered here",keyword);
#endif
check(iostat);
}
hdaccess_c(item,&iostat); check(iostat);
}
