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* Eliminate exess spacings in many doc pages.jan.nijtmans2016-03-021-3/+3
* Fix [426679ef7d]: Having man.macros after .TH breaks rendering on OpenBSD and...jan.nijtmans2013-11-051-1/+1
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| * Fix [426679ef7d]: Having man.macros after .TH breaks rendering on OpenBSD and...jan.nijtmans2013-11-051-1/+1
* | Updated the language of the documentation so that "object" refers to an OOdkf2012-11-081-2/+2
* | Now that we're no longer using SCM based on RCS, the RCS Keyword linesdgp2011-03-021-2/+0
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| * Now that we're no longer using SCM based on RCS, the RCS Keyword lines causedgp2011-03-021-2/+0
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| | * Now that we're no longer using SCM based on RCS, the RCS Keyword lines causedgp2011-03-011-2/+0
* | | Prepare Tcl's docs for life as 8.6 (remove out of date change bars, fixdkf2008-06-291-5/+1
|/ /
* | merge stable branch onto HEADdgp2007-12-131-1/+1
* | GOOBE the docs some more.dkf2007-10-291-4/+4
* | Merged kennykb-numerics-branch back to the head; TIPs 132 and 232Kevin B Kenny2005-05-101-1/+1
* | Purge old and inaccurate .VS/.VE macros.dkf2005-04-061-2/+2
* | minor nroff typoshobbs2004-12-071-10/+10
* | * doc/AddErrInfo.3: Docs for Tcl_(Get|Set)ReturnOptions. [TIP 227]dgp2004-11-201-4/+4
* | * doc/SaveResult.3: Documentation for Tcl_*InterpState (TIP 226).dgp2004-11-181-11/+72
|/
* merged tcl 8.1 branch back into the main trunkstanton1999-04-161-0/+65
generated by cgit v0.12 at 2024-11-06 16:05:35 (GMT)
span>H5T_DIR_DEFAULT && direction!=H5T_DIR_ASCEND && direction!=H5T_DIR_DESCEND) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not valid direction value") if((new_dt = H5T_get_native_type(dt, direction, NULL, NULL, &comp_size))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "cannot retrieve native type") if((ret_value=H5I_register(H5I_DATATYPE, new_dt)) < 0) HGOTO_ERROR(H5E_DATATYPE, H5E_CANTREGISTER, FAIL, "unable to register data type") done: /* Error cleanup */ if(ret_value<0) { if(new_dt) if(H5T_close(new_dt)<0) HDONE_ERROR(H5E_DATATYPE, H5E_CLOSEERROR, FAIL, "unable to release datatype") } /* end if */ FUNC_LEAVE_API(ret_value) } /*------------------------------------------------------------------------- * Function: H5T_get_native_type * * Purpose: Returns the native type of a datatype. * * Return: Success: Returns the native data type if successful. * * Failure: negative * * Programmer: Raymond Lu * Oct 3, 2002 * * Modifications: * *------------------------------------------------------------------------- */ static H5T_t* H5T_get_native_type(H5T_t *dtype, H5T_direction_t direction, size_t *struct_align, size_t *offset, size_t *comp_size) { H5T_t *dt; /* Datatype to make native */ H5T_class_t h5_class; /* Class of datatype to make native */ size_t size; /* Size of datatype to make native */ size_t prec; /* Precision of datatype to make native */ int snmemb; /* Number of members in compound & enum types */ unsigned nmemb; /* Number of members in compound & enum types */ H5T_t *super_type; /* Super type of VL, array and enum datatypes */ H5T_t *nat_super_type; /* Native form of VL, array & enum super datatype */ H5T_t *new_type=NULL; /* New native datatype */ unsigned i; /* Local index variable */ H5T_t *ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5T_get_native_type, NULL) assert(dtype); if((h5_class = H5T_get_class(dtype))<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a valid class") if((size = H5T_get_size(dtype))==0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a valid size") switch(h5_class) { case H5T_INTEGER: { H5T_sign_t sign; /* Signedness of integer type */ if((sign = H5T_get_sign(dtype))==H5T_SGN_ERROR) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a valid signess") prec = dtype->u.atomic.prec; if((ret_value = H5T_get_native_integer(prec, sign, direction, struct_align, offset, comp_size))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot retrieve integer type") } break; case H5T_FLOAT: if((ret_value = H5T_get_native_float(size, direction, struct_align, offset, comp_size))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot retrieve float type") break; case H5T_STRING: if((ret_value=H5T_copy(dtype, H5T_COPY_TRANSIENT))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot retrieve float type") if(H5T_IS_VL_STRING(dtype)) { /* Update size, offset and compound alignment for parent. */ if(H5T_cmp_offset(comp_size, offset, sizeof(char *), 1, H5T_POINTER_COMP_ALIGN_g, struct_align)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot compute compound offset") } else { /* Update size, offset and compound alignment for parent. */ if(H5T_cmp_offset(comp_size, offset, sizeof(char), size, H5T_NATIVE_SCHAR_COMP_ALIGN_g, struct_align)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot compute compound offset") } break; /* These types need to be supported properly still... */ case H5T_TIME: case H5T_BITFIELD: if((ret_value=H5T_copy(dtype, H5T_COPY_TRANSIENT))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot retrieve float type") break; case H5T_OPAQUE: if((ret_value=H5T_copy(dtype, H5T_COPY_TRANSIENT))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot retrieve float type") /* Update size, offset and compound alignment for parent. */ if(H5T_cmp_offset(comp_size, offset, sizeof(char), size, H5T_NATIVE_SCHAR_COMP_ALIGN_g, struct_align)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot compute compound offset") break; case H5T_REFERENCE: { size_t align; size_t ref_size; int not_equal; if((ret_value=H5T_copy(dtype, H5T_COPY_TRANSIENT))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot retrieve float type") /* Decide if the data type is object or dataset region reference. */ if(NULL==(dt=H5I_object(H5T_STD_REF_OBJ_g))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a data type") not_equal = H5T_cmp(ret_value, dt); /* Update size, offset and compound alignment for parent. */ if(!not_equal) { align = H5T_HOBJREF_COMP_ALIGN_g; ref_size = sizeof(hobj_ref_t); } else { align = H5T_HDSETREGREF_COMP_ALIGN_g; ref_size = sizeof(hdset_reg_ref_t); } if(H5T_cmp_offset(comp_size, offset, ref_size, 1, align, struct_align)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot compute compound offset") } break; case H5T_COMPOUND: { H5T_t *memb_type; /* Datatype of member */ H5T_t **memb_list; /* List of compound member IDs */ size_t *memb_offset; /* List of member offsets in compound type, including member size and alignment */ size_t children_size=0;/* Total size of compound members */ size_t children_st_align=0; /* The max alignment among compound members. This'll be the compound alignment */ char **comp_mname; /* List of member names in compound type */ if((snmemb = H5T_get_nmembers(dtype))<=0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "compound data type doesn't have any member") H5_ASSIGN_OVERFLOW(nmemb,snmemb,int,unsigned); if((memb_list = (H5T_t**)H5MM_malloc(nmemb*sizeof(H5T_t*)))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot allocate memory") if((memb_offset = (size_t*)H5MM_calloc(nmemb*sizeof(size_t)))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot allocate memory") if((comp_mname = (char**)H5MM_malloc(nmemb*sizeof(char*)))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot allocate memory") /* Construct child compound type and retrieve a list of their IDs, offsets, total size, and alignment for compound type. */ for(i=0; i<nmemb; i++) { if((memb_type = H5T_get_member_type(dtype, i))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "member type retrieval failed") if((comp_mname[i] = H5T_get_member_name(dtype, i))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "member type retrieval failed") if((memb_list[i] = H5T_get_native_type(memb_type, direction, &children_st_align, &(memb_offset[i]), &children_size))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "member identifier retrieval failed") if(H5T_close(memb_type)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot close datatype") } /* The alignment for whole compound type */ if(children_st_align && children_size % children_st_align) children_size += children_st_align-(children_size % children_st_align); /* Construct new compound type based on native type */ if((new_type=H5T_create(H5T_COMPOUND, children_size))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot create a compound type") /* Insert members for the new compound type */ for(i=0; i<nmemb; i++) { if(H5T_insert(new_type, comp_mname[i], memb_offset[i], memb_list[i])<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot insert member to compound datatype") } /* Update size, offset and compound alignment for parent. */ if(offset) *offset = *comp_size; if(struct_align && *struct_align < children_st_align) *struct_align = children_st_align; *comp_size += children_size; /* Close member data type */ for(i=0; i<nmemb; i++) { if(H5T_close(memb_list[i])<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot close datatype") /* Free member names in list */ H5MM_xfree(comp_mname[i]); } /* Free lists for members */ H5MM_xfree(memb_list); H5MM_xfree(memb_offset); H5MM_xfree(comp_mname); ret_value = new_type; } break; case H5T_ENUM: { char *memb_name; /* Enum's member name */ void *memb_value, *tmp_memb_value; /* Enum's member value */ hid_t super_type_id, nat_super_type_id; /* Don't need to do anything special for alignment, offset since the ENUM type usually is integer. */ /* Retrieve base type for enumarate type */ if((super_type=H5T_get_super(dtype))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "unable to get base type for enumarate type") if((nat_super_type = H5T_get_native_type(super_type, direction, struct_align, offset, comp_size))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "base native type retrieval failed") if((super_type_id=H5I_register(H5I_DATATYPE, super_type))<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot register datatype") if((nat_super_type_id=H5I_register(H5I_DATATYPE, nat_super_type))<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot register datatype") /* Allocate room for the enum values */ if((tmp_memb_value = H5MM_calloc(H5T_get_size(super_type)))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot allocate memory") if((memb_value = H5MM_calloc(H5T_get_size(nat_super_type)))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot allocate memory") /* Construct new enum type based on native type */ if((new_type=H5T_enum_create(nat_super_type))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "unable to create enum type") /* Retrieve member info and insert members into new enum type */ if((snmemb = H5T_get_nmembers(dtype))<=0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "enumarate data type doesn't have any member") H5_ASSIGN_OVERFLOW(nmemb,snmemb,int,unsigned); for(i=0; i<nmemb; i++) { if((memb_name=H5T_get_member_name(dtype, i))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot get member name") if(H5T_get_member_value(dtype, i, tmp_memb_value)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot get member value") HDmemcpy(memb_value, tmp_memb_value, H5T_get_size(super_type)); if(H5Tconvert(super_type_id, nat_super_type_id, 1, memb_value, NULL, H5P_DEFAULT)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot get member value") if(H5T_enum_insert(new_type, memb_name, memb_value)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot insert member") H5MM_xfree(memb_name); } H5MM_xfree(memb_value); H5MM_xfree(tmp_memb_value); /* Close base type */ if(H5Tclose(nat_super_type_id)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot close datatype") /* Close super type */ if(H5Tclose(super_type_id)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot close datatype") ret_value = new_type; } break; case H5T_ARRAY: { int sarray_rank; /* Array's rank */ unsigned array_rank; /* Array's rank */ hsize_t *dims = NULL; /* Dimension sizes for array */ hsize_t nelems = 1; size_t super_offset=0; size_t super_size=0; size_t super_align=0; /* Retrieve dimension information for array data type */ if((sarray_rank=H5T_get_array_ndims(dtype))<=0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot get dimension rank") H5_ASSIGN_OVERFLOW(array_rank,sarray_rank,int,unsigned); if((dims = (hsize_t*)H5MM_malloc(array_rank*sizeof(hsize_t)))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot allocate memory") if(H5T_get_array_dims(dtype, dims, NULL)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot get dimension size") /* Retrieve base type for array type */ if((super_type=H5T_get_super(dtype))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "unable to get parent type for enumarate type") if((nat_super_type = H5T_get_native_type(super_type, direction, &super_align, &super_offset, &super_size))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "parent native type retrieval failed") /* Close super type */ if(H5T_close(super_type)<0) HGOTO_ERROR(H5E_ARGS, H5E_CLOSEERROR, NULL, "cannot close datatype") /* Create a new array type based on native type */ if((new_type=H5T_array_create(nat_super_type, sarray_rank, dims, NULL))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "unable to create array type") /* Close base type */ if(H5T_close(nat_super_type)<0) HGOTO_ERROR(H5E_ARGS, H5E_CLOSEERROR, NULL, "cannot close datatype") for(i=0; i<array_rank; i++) nelems *= dims[i]; H5_CHECK_OVERFLOW(nelems,hsize_t,size_t); if(H5T_cmp_offset(comp_size, offset, super_size, (size_t)nelems, super_align, struct_align)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot compute compound offset") H5MM_xfree(dims); ret_value = new_type; } break; case H5T_VLEN: { size_t vl_align = 0; size_t vl_size = 0; size_t super_size=0; /* Retrieve base type for array type */ if((super_type=H5T_get_super(dtype))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "unable to get parent type for enumarate type") /* Don't need alignment, offset information if this VL isn't a field of compound type. If it * is, go to a few steps below to compute the information directly. */ if((nat_super_type = H5T_get_native_type(super_type, direction, NULL, NULL, &super_size))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "parent native type retrieval failed") /* Close super type */ if(H5T_close(super_type)<0) HGOTO_ERROR(H5E_ARGS, H5E_CLOSEERROR, NULL, "cannot close datatype") /* Create a new array type based on native type */ if((new_type=H5T_vlen_create(nat_super_type))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "unable to create VL type") /* Close base type */ if(H5T_close(nat_super_type)<0) HGOTO_ERROR(H5E_ARGS, H5E_CLOSEERROR, NULL, "cannot close datatype") /* Update size, offset and compound alignment for parent compound type directly. */ vl_align = H5T_HVL_COMP_ALIGN_g; vl_size = sizeof(hvl_t); if(H5T_cmp_offset(comp_size, offset, vl_size, 1, vl_align, struct_align)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot compute compound offset") ret_value = new_type; } break; default: HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "data type doesn't match any native type") } done: /* Error cleanup */ if(ret_value==NULL) { if(new_type) if(H5T_close(new_type)<0) HDONE_ERROR(H5E_DATATYPE, H5E_CLOSEERROR, NULL, "unable to release datatype") } /* end if */ FUNC_LEAVE_NOAPI(ret_value) } /*------------------------------------------------------------------------- * Function: H5T_get_native_integer * * Purpose: Returns the native integer type of a datatype. * * Return: Success: Returns the native data type if successful. * * Failure: negative * * Programmer: Raymond Lu * Oct 3, 2002 * * Modifications: Pedro Vicente * Sep 4, 2004 * Choose the type based on the precision; this is to support cases * like the Cray SV1, where the size of short is 8 but precision is 32 * (e.g an INT (size 8, prec 64) would be converted to a SHORT * (size 8, prec 32) if the size was the deciding factor) * *------------------------------------------------------------------------- */ static H5T_t* H5T_get_native_integer(size_t prec, H5T_sign_t sign, H5T_direction_t direction, size_t *struct_align, size_t *offset, size_t *comp_size) { H5T_t *dt; /* Appropriate native datatype to copy */ hid_t tid=(-1); /* Datatype ID of appropriate native datatype */ size_t align=0; /* Alignment necessary for native datatype */ size_t native_size=0; /* Datatype size of the native type */ enum match_type { /* The different kinds of integers we can match */ H5T_NATIVE_INT_MATCH_CHAR, H5T_NATIVE_INT_MATCH_SHORT, H5T_NATIVE_INT_MATCH_INT, H5T_NATIVE_INT_MATCH_LONG, H5T_NATIVE_INT_MATCH_LLONG, H5T_NATIVE_INT_MATCH_UNKNOWN } match=H5T_NATIVE_INT_MATCH_UNKNOWN; H5T_t *ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5T_get_native_integer, NULL); if(direction == H5T_DIR_DEFAULT || direction == H5T_DIR_ASCEND) { if(prec<=H5Tget_precision(H5T_NATIVE_SCHAR)) { match=H5T_NATIVE_INT_MATCH_CHAR; native_size = sizeof(char); } else if(prec<=H5Tget_precision(H5T_NATIVE_SHORT)) { match=H5T_NATIVE_INT_MATCH_SHORT; native_size = sizeof(short); } else if(prec<=H5Tget_precision(H5T_NATIVE_INT)) { match=H5T_NATIVE_INT_MATCH_INT; native_size = sizeof(int); } else if(prec<=H5Tget_precision(H5T_NATIVE_LONG)) { match=H5T_NATIVE_INT_MATCH_LONG; native_size = sizeof(long); } else if(prec<=H5Tget_precision(H5T_NATIVE_LLONG)) { match=H5T_NATIVE_INT_MATCH_LLONG; native_size = sizeof(long_long); } else { /* If no native type matches the querried datatype, simply choose the type of biggest size. */ match=H5T_NATIVE_INT_MATCH_LLONG; native_size = sizeof(long_long); } } else if(direction == H5T_DIR_DESCEND) { if(prec>=H5Tget_precision(H5T_NATIVE_LLONG)) { match=H5T_NATIVE_INT_MATCH_LLONG; native_size = sizeof(long_long); } else if(prec>=H5Tget_precision(H5T_NATIVE_LONG)) { if(prec==H5Tget_precision(H5T_NATIVE_LONG)) { match=H5T_NATIVE_INT_MATCH_LONG; native_size = sizeof(long); } else { match=H5T_NATIVE_INT_MATCH_LLONG; native_size = sizeof(long_long); } } else if(prec>=H5Tget_precision(H5T_NATIVE_INT)) { if(prec==H5Tget_precision(H5T_NATIVE_INT)) { match=H5T_NATIVE_INT_MATCH_INT; native_size = sizeof(int); } else { match=H5T_NATIVE_INT_MATCH_LONG; native_size = sizeof(long); } } else if(prec>=H5Tget_precision(H5T_NATIVE_SHORT)) { if(prec==H5Tget_precision(H5T_NATIVE_SHORT)) { match=H5T_NATIVE_INT_MATCH_SHORT; native_size = sizeof(short); } else { match=H5T_NATIVE_INT_MATCH_INT; native_size = sizeof(int); } } else if(prec>=H5Tget_precision(H5T_NATIVE_SCHAR)) { if(prec==H5Tget_precision(H5T_NATIVE_SCHAR)) { match=H5T_NATIVE_INT_MATCH_CHAR; native_size = sizeof(char); } else { match=H5T_NATIVE_INT_MATCH_SHORT; native_size = sizeof(short); } } else { /* If no native type matches the queried datatype, simply choose the type of smallest size. */ match=H5T_NATIVE_INT_MATCH_CHAR; native_size = sizeof(char); } } /* Set the appropriate native datatype information */ switch(match) { case H5T_NATIVE_INT_MATCH_CHAR: if(sign==H5T_SGN_2) tid = H5T_NATIVE_SCHAR; else tid = H5T_NATIVE_UCHAR; align = H5T_NATIVE_SCHAR_COMP_ALIGN_g; break; case H5T_NATIVE_INT_MATCH_SHORT: if(sign==H5T_SGN_2) tid = H5T_NATIVE_SHORT; else tid = H5T_NATIVE_USHORT; align = H5T_NATIVE_SHORT_COMP_ALIGN_g; break; case H5T_NATIVE_INT_MATCH_INT: if(sign==H5T_SGN_2) tid = H5T_NATIVE_INT; else tid = H5T_NATIVE_UINT; align = H5T_NATIVE_INT_COMP_ALIGN_g; break; case H5T_NATIVE_INT_MATCH_LONG: if(sign==H5T_SGN_2) tid = H5T_NATIVE_LONG; else tid = H5T_NATIVE_ULONG; align = H5T_NATIVE_LONG_COMP_ALIGN_g; break; case H5T_NATIVE_INT_MATCH_LLONG: if(sign==H5T_SGN_2) tid = H5T_NATIVE_LLONG; else tid = H5T_NATIVE_ULLONG; align = H5T_NATIVE_LLONG_COMP_ALIGN_g; break; default: assert(0 && "Unknown native integer match!"); break; } /* end switch */ /* Create new native type */ assert(tid>=0); if(NULL==(dt=H5I_object(tid))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a data type") if((ret_value=H5T_copy(dt, H5T_COPY_TRANSIENT))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot copy type") /* compute size and offset of compound type member. */ if(H5T_cmp_offset(comp_size, offset, native_size, 1, align, struct_align)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot compute compound offset") done: FUNC_LEAVE_NOAPI(ret_value) } /*------------------------------------------------------------------------- * Function: H5T_get_native_float * * Purpose: Returns the native floatt type of a datatype. * * Return: Success: Returns the native data type if successful. * * Failure: negative * * Programmer: Raymond Lu * Oct 3, 2002 * * Modifications: * *------------------------------------------------------------------------- */ static H5T_t* H5T_get_native_float(size_t size, H5T_direction_t direction, size_t *struct_align, size_t *offset, size_t *comp_size) { H5T_t *dt=NULL; /* Appropriate native datatype to copy */ hid_t tid=(-1); /* Datatype ID of appropriate native datatype */ size_t align=0; /* Alignment necessary for native datatype */ size_t native_size=0; /* Datatype size of the native type */ enum match_type { /* The different kinds of floating point types we can match */ H5T_NATIVE_FLOAT_MATCH_FLOAT, H5T_NATIVE_FLOAT_MATCH_DOUBLE, H5T_NATIVE_FLOAT_MATCH_LDOUBLE, H5T_NATIVE_FLOAT_MATCH_UNKNOWN } match=H5T_NATIVE_FLOAT_MATCH_UNKNOWN; H5T_t *ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5T_get_native_float, NULL) assert(size>0); if(direction == H5T_DIR_DEFAULT || direction == H5T_DIR_ASCEND) { if(size<=sizeof(float)) { match=H5T_NATIVE_FLOAT_MATCH_FLOAT; native_size = sizeof(float); } else if(size<=sizeof(double)) { match=H5T_NATIVE_FLOAT_MATCH_DOUBLE; native_size = sizeof(double); } else if(size<=sizeof(long double)) { match=H5T_NATIVE_FLOAT_MATCH_LDOUBLE; native_size = sizeof(long double); } else { /* If not match, return the biggest datatype */ match=H5T_NATIVE_FLOAT_MATCH_LDOUBLE; native_size = sizeof(long double); } } else { if(size>=sizeof(long double)) { match=H5T_NATIVE_FLOAT_MATCH_LDOUBLE; native_size = sizeof(long double); } else if(size>=sizeof(double)) { if(size==sizeof(double)) { match=H5T_NATIVE_FLOAT_MATCH_DOUBLE; native_size = sizeof(double); } else { match=H5T_NATIVE_FLOAT_MATCH_LDOUBLE; native_size = sizeof(long double); } } else if(size>=sizeof(float)) { if(size==sizeof(float)) { match=H5T_NATIVE_FLOAT_MATCH_FLOAT; native_size = sizeof(float); } else { match=H5T_NATIVE_FLOAT_MATCH_DOUBLE; native_size = sizeof(double); } } else { match=H5T_NATIVE_FLOAT_MATCH_FLOAT; native_size = sizeof(float); } } /* Set the appropriate native floating point information */ switch(match) { case H5T_NATIVE_FLOAT_MATCH_FLOAT: tid = H5T_NATIVE_FLOAT; align = H5T_NATIVE_FLOAT_COMP_ALIGN_g; break; case H5T_NATIVE_FLOAT_MATCH_DOUBLE: tid = H5T_NATIVE_DOUBLE; align = H5T_NATIVE_DOUBLE_COMP_ALIGN_g; break; case H5T_NATIVE_FLOAT_MATCH_LDOUBLE: tid = H5T_NATIVE_LDOUBLE; align = H5T_NATIVE_LDOUBLE_COMP_ALIGN_g; break; default: assert(0 && "Unknown native floating-point match!"); break; } /* end switch */ /* Create new native type */ assert(tid>=0); if(NULL==(dt=H5I_object(tid))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a data type") if((ret_value=H5T_copy(dt, H5T_COPY_TRANSIENT))==NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot retrieve float type") /* compute offset of compound type member. */ if(H5T_cmp_offset(comp_size, offset, native_size, 1, align, struct_align)<0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "cannot compute compound offset") done: FUNC_LEAVE_NOAPI(ret_value) } /*------------------------------------------------------------------------- * Function: H5T_cmp_offset * * Purpose: This function is only for convenience. It computes the * compound type size, offset of the member being considered * and the alignment for the whole compound type. * * Return: Success: Non-negative value. * * Failure: Negative value. * * Programmer: Raymond Lu * December 10, 2002 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5T_cmp_offset(size_t *comp_size, size_t *offset, size_t elem_size, size_t nelems, size_t align, size_t *struct_align) { herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI(H5T_cmp_offset, FAIL) if(offset && comp_size) { if(align>1 && *comp_size%align) { /* Add alignment value */ *offset = *comp_size + (align - *comp_size%align); *comp_size += (align - *comp_size%align); } else *offset = *comp_size; /* compute size of compound type member. */ *comp_size += nelems*elem_size; } if(struct_align && *struct_align < align) *struct_align = align; done: FUNC_LEAVE_NOAPI(ret_value) }
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