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########################################################################
# #
# This software is part of the ast package #
# Copyright (c) 1982-2010 AT&T Intellectual Property #
# and is licensed under the #
# Common Public License, Version 1.0 #
# by AT&T Intellectual Property #
# #
# A copy of the License is available at #
# http://www.opensource.org/licenses/cpl1.0.txt #
# (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) #
# #
# Information and Software Systems Research #
# AT&T Research #
# Florham Park NJ #
# #
# David Korn <dgk@research.att.com> #
# #
########################################################################
: generate the ksh math builtin table
: include math.tab
# @(#)math.sh (AT&T Research) 2009-08-18
command=$0
iffeflags="-n -v"
iffehdrs="math.h ieeefp.h"
iffelibs="-lm"
table=/dev/null
eval $1
shift
table=$1
names=
tests=
: check long double
eval `iffe $iffeflags -c "$cc" - typ long.double 2>&$stderr`
: check ast_standards.h
eval `iffe $iffeflags -F ast_standards.h -c "$cc" - tst use_ast_standards -lm 'note{' 'math.h needs ast_standards.h' '}end' 'link{' '#include <math.h>' '#ifndef isgreater' '#define isgreater(a,b) 0' '#endif' 'int main() { return isgreater(0.0,1.0); }' '}end'`
case $_use_ast_standards in
1) iffeflags="$iffeflags -F ast_standards.h" ;;
esac
: read the table
exec < $table
while read type args name aka comment
do case $type in
[fi]) names="$names $name"
tests="$tests,$name"
case $_typ_long_double in
1) tests="$tests,${name}l" ;;
esac
eval TYPE_$name=$type ARGS_$name=$args AKA_$name=$aka
;;
esac
done
: check the math library
eval `iffe $iffeflags -c "$cc" - lib $tests $iffehdrs $iffelibs 2>&$stderr`
lib=
for name in $names
do eval x='$'_lib_${name}l y='$'_lib_${name}
case $x in
1) lib="$lib,${name}l" ;;
esac
case $y in
1) case $x in
'') lib="$lib,${name}" ;;
esac
;;
esac
done
eval `iffe $iffeflags -c "$cc" - dat,npt,mac $lib $iffehdrs $iffelibs 2>&$stderr`
cat <<!
#pragma prototyped
/* : : generated by $command from $table : : */
typedef Sfdouble_t (*Math_f)(Sfdouble_t,...);
!
case $_use_ast_standards in
1) echo "#include <ast_standards.h>" ;;
esac
echo "#include <math.h>"
case $_hdr_ieeefp in
1) echo "#include <ieeefp.h>" ;;
esac
echo
: generate the intercept functions and table entries
nl='
'
ht=' '
tab=
for name in $names
do eval x='$'_lib_${name}l y='$'_lib_${name} r='$'TYPE_${name} a='$'ARGS_${name} aka='$'AKA_${name}
case $x:$y in
1:*) f=${name}l
t=Sfdouble_t
local=
;;
*:1) f=${name}
t=double
local=$_typ_long_double
;;
*) case $aka in
*=*) f=${aka%%=*}
v=${aka#*=}
eval x='$'_lib_${f}l y='$'_lib_${f}
case $x:$y in
1:*) f=${f}l
;;
*:1) ;;
*) continue
;;
esac
L=local_$name r=int R=1
echo "#ifdef $v${nl}static $r $L(Sfdouble_t x) { return $f(x) == $v; }${nl}#endif"
tab="$tab$nl#ifdef $v$nl$ht\"\\0${R}${a}${name}\",$ht(Math_f)${L},${nl}#endif"
;;
esac
continue
;;
esac
eval n='$'_npt_$f m='$'_mac_$f d='$'_dat_$f
case $r in
i) L=int r=int R=1 ;;
*) L=Sfdouble_t r=$t R=0 ;;
esac
case $d:$m:$n in
1:*:*|*:1:*)
;;
*:*:1) code="extern $r $f("
sep=
for p in 1 2 3 4 5 6 7
do code="$code${sep}$t"
case $a in
$p) break ;;
esac
sep=","
done
code="$code);"
echo "$code"
;;
esac
case $local:$m:$n:$d in
1:*:*:*|*:1:*:*|*:*:1:)
args=
code="static $L local_$f("
sep=
for p in 1 2 3 4 5 6 7 8 9
do args="$args${sep}a$p"
code="$code${sep}Sfdouble_t a$p"
case $a in
$p) break ;;
esac
sep=","
done
code="$code){return $f($args);}"
echo "$code"
f=local_$f
;;
esac
for x in $name $aka
do tab="$tab$nl$ht\"\\0${R}${a}${x}\",$ht(Math_f)$f,"
done
done
tab="$tab$nl$ht\"\",$ht$ht(Math_f)0"
cat <<!
/*
* first byte is two-digit octal number. Last digit is number of args
* first digit is 0 if return value is double, 1 for integer
*/
const struct mathtab shtab_math[] =
{$tab
};
!
|
