import_intel_libm

glibc 2.9,最新版的C语言库函数

#!/bin/sh

# Notes:

#  We don't import copysign finite, fpclassify, isinf, isnan, and signbit
#  since our own versions are nicer and just as correct and fast (except
#  perhaps that they don't handle non-finite arguments well?).
#
#  Also, leave out cabs for now since it doesn't seem overridable in
#  glibc.

libm_dir=$1

import_s() {
	# $1 = name
	# $2 = source file-name
	# $3 = destination file-name
	echo "Importing $1 from $2 -> $3"
	rm -f $3
	awk -f import_file.awk FUNC=$1 $2 > $3
}

import_c() {
	# $1 = name
	# $2 = source file-name
	# $3 = destination file-name
	echo "Importing $1 from $2 -> $3"
	rm -f $3
	awk -f import_file.awk LICENSE_ONLY=y $2 > $3
}

do_imports() {
    while read func_pattern src_file dst_file; do
        case $src_file in
	*.[ch])
	    import_c "$func_pattern" "$src_file" "$dst_file"
	    ;;
	*)
	    import_s "$func_pattern" "$src_file" "$dst_file"
	    ;;
	esac
    done
}

./gen_import_file_list $libm_dir > import_file_list

do_imports < import_file_list

emptyfiles="
e_gamma_r.c
e_gammaf_r.c
e_gammal_r.c
s_sincos.c
s_sincosf.c
s_sincosl.c
t_exp.c
w_acosh.c
w_acoshf.c
w_acoshl.c
w_atanh.c
w_atanhf.c
w_atanhl.c
w_exp10.c
w_exp10f.c
w_exp10l.c
w_exp2.c
w_exp2f.c
w_exp2l.c
w_expl.c
w_lgamma_r.c
w_lgammaf_r.c
w_lgammal_r.c
w_log2.c
w_log2f.c
w_log2l.c
w_sinh.c
w_sinhf.c
w_sinhl.c
"
for f in $emptyfiles
do
  rm -f $f
  echo "/* Not needed. */" > $f
done

removedfiles="
libm_atan2_reg.S
s_ldexp.S
s_ldexpf.S
s_ldexpl.S
s_scalbn.S
s_scalbnf.S
s_scalbnl.S
"

rm -f $removedfiles

for f in lgammaf_r.c lgammal_r.c lgamma_r.c
do
  import_c $f $libm_dir/$f e_$f
done

for f in lgamma.c lgammaf.c lgammal.c
do
  import_c $f $libm_dir/$f w_$f
done