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calc/size.c
Landon Curt Noll ac0d84eef8 Release v2.12.9.0 
Added notes to help/unexpected about:

    display() will limit the number of digits printed after decimal point

    %d will format after the decimal point for non-integer numeric values

    %x will format as fractions for non-integer numeric values

    fprintf(fd, "%d\n", huge_value) may need fflush(fd) to finish

Fixed Makefile dependencies for the args.h rule.

Fixed Makefile cases where echo with -n is used.  On some systems,
/bin/sh does not use -n, so we must call /bin/echo -n instead
via the ${ECHON} Makefile variable.

Add missing standard tools to sub-Makefiles to make them
easier to invoke directly.

Sort lists of standard tool Makefile variables and remove duplicates.

Declare the SHELL at the top of Makefiles.

Fixed the depend rule in the custom Makefile.

Improved the messages produced by the depend in the Makefiles.

Changed the UNUSED define in have_unused.h to be a macro with
a parameter.  Changed all use of UNUSED in *.c to be UNUSED(x).

Removed need for HAVE_UNUSED in building the have_unused.h file.

 CCBAN is given to ${CC} in order to control if banned.h is in effect.

 The banned.h attempts to ban the use of certain dangerous functions
 that, if improperly used, could compromise the computational integrity
 if calculations.

 In the case of calc, we are motivated in part by the desire for calc
 to correctly calculate: even during extremely long calculations.

 If UNBAN is NOT defined, then calling certain functions
 will result in a call to a non-existent function (link error).

 While we do NOT encourage defining UNBAN, there may be
 a system / compiler environment where re-defining a
 function may lead to a fatal compiler complication.
 If that happens, consider compiling as:

    make clobber all chk CCBAN=-DUNBAN

 as see if this is a work-a-round.

 If YOU discover a need for the -DUNBAN work-a-round, PLEASE tell us!
 Please send us a bug report.  See the file:

    BUGS

 or the URL:

    http://www.isthe.com/chongo/tech/comp/calc/calc-bugrept.html

 for how to send us such a bug report.

 Added the building of have_ban_pragma.h, which will determine
 if "#pragma GCC poison func_name" is supported.  If it is not,
 or of HAVE_PRAGMA_GCC_POSION=-DHAVE_NO_PRAGMA_GCC_POSION, then
 banned.h will have no effect.

 Fixed building of the have_getpgid.h file.
 Fixed building of the have_getprid.h file.
 Fixed building of the have_getsid.h file.
 Fixed building of the have_gettime.h file.
 Fixed building of the have_strdup.h file.
 Fixed building of the have_ustat.h file.
 Fixed building of the have_rusage.h file.

 Added HAVE_NO_STRLCPY to control if we want to test if
 the system has a strlcpy() function.  This in turn produces
 the have_strlcpy.h file wherein the symbol HAVE_STRLCPY will
 be defined, or not depending if the system comes with a
 strlcpy() function.

 If the system does not have a strlcpy() function, we
 compile our own strlcpy() function.  See strl.c for details.

 Added HAVE_NO_STRLCAT to control if we want to test if
 the system has a strlcat() function.  This in turn produces
 the have_strlcat.h file wherein the symbol HAVE_STRLCAT will
 be defined, or not depending if the system comes with a
 strlcat() function.

 If the system does not have a strlcat() function, we
 compile our own strlcat() function.  See strl.c for details.

 Fixed places were <string.h>, using #ifdef HAVE_STRING_H
 for legacy systems that do not have that include file.

 Added ${H} Makefile symbol to control the announcement
 of forming and having formed hsrc related files.  By default
 H=@ (announce hsrc file formation) vs. H=@: to silence hsrc
 related file formation.

 Explicitly turn off quiet mode (set Makefile variable ${Q} to
 be empty) when building rpms.

 Improved and fixed the hsrc build process.

 Forming rpms is performed in verbose mode to assist debugging
 to the rpm build process.

 Compile custom code, if needed, after main code is compiled.
2021-03-11 01:54:28 -08:00

444 lines
8.9 KiB
C
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/*
* size - size and sizeof functions are implemented here
*
* Copyright (C) 1999-2007,2021 David I. Bell
*
* Calc is open software; you can redistribute it and/or modify it under
* the terms of the version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* Calc is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
* Public License for more details.
*
* A copy of version 2.1 of the GNU Lesser General Public License is
* distributed with calc under the filename COPYING-LGPL. You should have
* received a copy with calc; if not, write to Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Under source code control: 1997/03/10 01:56:51
* File existed as early as: 1997
*
* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
*/
#include "value.h"
#include "zrand.h"
#include "zrandom.h"
#include "block.h"
#include "banned.h" /* include after system header <> includes */
/*
* forward declarations
*/
S_FUNC size_t zsize(ZVALUE);
S_FUNC size_t qsize(NUMBER*);
S_FUNC size_t csize(COMPLEX*);
S_FUNC size_t memzsize(ZVALUE);
S_FUNC size_t memqsize(NUMBER*);
/*
* elm_count - return information about the number of elements
*
* Return information about the number of elements or part of
* a value. This is what the size() builtin returns with the
* exception of the V_FILE type. To get V_FILE size length,
* the getsize(vp->v_file, &len) should be called directly.
*
* This is not the sizeof, see lsizeof() for that information.
*
* given:
* vp pointer to a value
*
* return:
* number of elements
*/
long
elm_count(VALUE *vp)
{
long result;
/*
* return information about the number of elements
*
* This is not the sizeof, see lsizeof() for that information.
* This is does not include overhead, see memsize() for that info.
*/
switch (vp->v_type) {
case V_NULL:
case V_INT:
case V_ADDR:
case V_OCTET:
result = 0;
break;
case V_MAT:
result = vp->v_mat->m_size;
break;
case V_LIST:
result = vp->v_list->l_count;
break;
case V_ASSOC:
result = vp->v_assoc->a_count;
break;
case V_OBJ:
result = vp->v_obj->o_actions->oa_count;
break;
case V_STR:
result = vp->v_str->s_len;
break;
case V_BLOCK:
result = (long) vp->v_block->datalen;
break;
case V_NBLOCK:
result = (long) vp->v_nblock->blk->datalen;
break;
/*
* V_NUM, V_COM, V_RAND, V_RANDOM, V_CONFIG, V_HASH
*
* V_FILE (use getsize(vp->v_file, &len) for file length)
*/
default:
result = (vp->v_type > 0);
break;
}
return result;
}
/*
* zsize - calculate memory footprint of a ZVALUE (excluding overhead)
*
* The numeric -1, - and 1 storage values are ignored.
*
* given:
* z ZVALUE to examine
*
* returns:
* value size
*/
S_FUNC size_t
zsize(ZVALUE z)
{
/* ignore the size of 0, 1 and -1 */
if (z.v != _zeroval_ && z.v != _oneval_ && !zisunit(z) && !ziszero(z)) {
return z.len * sizeof(HALF);
} else {
return (size_t)0;
}
}
/*
* qsize - calculate memory footprint of a NUMBER (excluding overhead)
*
* The numeric -1, - and 1 storage values are ignored. Denominator
* parts of integers are ignored.
*
* given:
* q pointer to NUMBER to examine
*
* returns:
* value size
*/
S_FUNC size_t
qsize(NUMBER *q)
{
/* ignore denominator parts of integers */
if (qisint(q)) {
return zsize(q->num);
} else {
return (zsize(q->num) + zsize(q->den));
}
}
/*
* csize - calculate memory footprint of a COMPLEX (excluding overhead)
*
* The numeric -1, - and 1 storage values are ignored. Denominator
* parts of integers are ignored. Imaginary parts of pure reals
* are ignored.
*
* given:
* c pointer to COMPLEX to examine
*
* returns:
* value size
*/
S_FUNC size_t
csize(COMPLEX *c)
{
/* ignore denominator parts of integers */
if (cisreal(c)) {
return qsize(c->real);
} else {
return (qsize(c->real) + qsize(c->imag));
}
}
/*
* memzsize - calculate memory footprint of a ZVALUE including overhead
*
* given:
* z ZVALUE to examine
*
* returns:
* memory footprint
*/
S_FUNC size_t
memzsize(ZVALUE z)
{
return sizeof(ZVALUE) + (z.len * sizeof(HALF));
}
/*
* memqsize - calculate memory footprint of a NUMBER including overhead
*
* given:
* q pointer of NUMBER to examine
*
* returns:
* memory footprint
*/
S_FUNC size_t
memqsize(NUMBER *q)
{
return sizeof(NUMBER) + memzsize(q->num) + memzsize(q->den);
}
/*
* lsizeof - calculate memory footprint of a VALUE (not counting overhead)
*
* given:
* vp pointer of VALUE to examine
*
* returns:
* memory footprint
*/
size_t
lsizeof(VALUE *vp)
{
VALUE *p;
LISTELEM *ep;
OBJECTACTIONS *oap;
ASSOCELEM *aep;
ASSOCELEM **ept;
size_t s;
long i;
/*
* return information about memory footprint
*
* This is not the number of elements, see elm_count() for that info.
* This is does not include overhead, see memsize() for that info.
*/
i = 0;
s = 0;
if (vp->v_type > 0) {
switch(vp->v_type) {
case V_INT:
case V_ADDR:
case V_OCTET:
break;
case V_NUM:
s = qsize(vp->v_num);
break;
case V_COM:
s = csize(vp->v_com);
break;
case V_STR:
s = vp->v_str->s_len + 1;
break;
case V_MAT:
i = vp->v_mat->m_size;
p = vp->v_mat->m_table;
while (i-- > 0)
s += lsizeof(p++);
break;
case V_LIST:
for (ep = vp->v_list->l_first; ep; ep = ep->e_next) {
s += lsizeof(&ep->e_value);
}
break;
case V_ASSOC:
i = vp->v_assoc->a_size;
ept = vp->v_assoc->a_table;
while (i-- > 0) {
for (aep = ept[i]; aep; aep = aep->e_next) {
s += lsizeof(&aep->e_value);
}
}
break;
case V_OBJ:
oap = vp->v_obj->o_actions;
i = oap->oa_count;
p = vp->v_obj->o_table;
while (i-- > 0)
s += lsizeof(p++);
break;
case V_FILE:
s = sizeof(vp->v_file);
break;
case V_RAND:
s = sizeof(RAND);
break;
case V_RANDOM:
s = sizeof(RANDOM) +
zsize(vp->v_random->n) +
zsize(vp->v_random->r);
break;
case V_CONFIG:
s = sizeof(CONFIG) +
strlen(vp->v_config->prompt1) +
strlen(vp->v_config->prompt2) + 2;
break;
case V_HASH:
/* ignore the unused part of the union */
s = sizeof(HASH) +
vp->v_hash->unionsize -
sizeof(vp->v_hash->h_union);
break;
case V_BLOCK:
s = vp->v_block->maxsize;
break;
case V_NBLOCK:
s = vp->v_nblock->blk->maxsize;
break;
default:
math_error("sizeof not defined for value type");
/*NOTREACHED*/
}
}
return s;
}
/*
* memsize - calculate memory footprint of a VALUE including overhead
*
* given:
* vp pointer of VALUE to examine
*
* returns:
* memory footprint including overhead
*/
size_t
memsize(VALUE *vp)
{
size_t s;
long i, j;
VALUE *p;
LISTELEM *ep;
OBJECTACTIONS *oap;
ASSOCELEM *aep;
ASSOCELEM **ept;
/*
* return information about memory footprint
*
* This is not the sizeof, see memsize() for that information.
* This is not the number of elements, see elm_count() for that info.
*/
i = j = 0;
s = sizeof(VALUE);
if (vp->v_type > 0) {
switch(vp->v_type) {
case V_INT:
case V_ADDR:
case V_OCTET:
break;
case V_NUM:
s = memqsize(vp->v_num);
break;
case V_COM:
s = sizeof(COMPLEX) +
memqsize(vp->v_com->real) +
memqsize(vp->v_com->imag);
break;
case V_STR:
s = sizeof(STRING) + vp->v_str->s_len + 1;
break;
case V_MAT:
s = sizeof(MATRIX);
i = vp->v_mat->m_size;
p = vp->v_mat->m_table;
while (i-- > 0)
s += memsize(p++);
break;
case V_LIST:
s = sizeof(LIST);
for (ep = vp->v_list->l_first; ep; ep = ep->e_next) {
s += sizeof(LISTELEM) - sizeof(VALUE) +
memsize(&ep->e_value);
}
break;
case V_ASSOC:
s = sizeof(ASSOC);
i = vp->v_assoc->a_size;
ept = vp->v_assoc->a_table;
while (i-- > 0) {
s += sizeof(ASSOCELEM *);
for (aep = *ept++; aep; aep = aep->e_next) {
s += sizeof(ASSOCELEM) - sizeof(VALUE) +
memsize(&aep->e_value);
j = aep->e_dim;
p = aep->e_indices;
while (j-- > 0)
s += memsize(p++);
}
}
break;
case V_OBJ:
s = sizeof(OBJECT);
oap = vp->v_obj->o_actions;
i = oap->oa_count;
s += (i + 3) * sizeof(int);
p = vp->v_obj->o_table;
while (i-- > 0)
s += memsize(p++);
break;
case V_FILE:
s = sizeof(vp->v_file);
break;
case V_RAND:
s = sizeof(RAND);
break;
case V_RANDOM:
s = sizeof(RANDOM) +
memzsize(vp->v_random->n) +
memzsize(vp->v_random->r);
break;
case V_CONFIG:
s = sizeof(CONFIG) + 2 +
strlen(vp->v_config->prompt1) +
strlen(vp->v_config->prompt2);
break;
case V_HASH:
s = sizeof(HASH);
break;
case V_BLOCK:
s = sizeof(BLOCK) + vp->v_block->maxsize;
break;
case V_NBLOCK:
s = sizeof(NBLOCK) + sizeof(BLOCK) +
vp->v_nblock->blk->maxsize +
strlen(vp->v_nblock->name) + 1;
break;
default:
math_error("memsize not defined for value type");
/*NOTREACHED*/
}
}
return s;
}
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