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e8dab9477f
The versions of llrint and llrintf for older powerpc32 processors convert the results of __rint / __rintf to long long int, resulting in spurious exceptions from such casts in certain cases. This patch makes glibc work around the problems with the libgcc conversions when the compiler used to build glibc doesn't use the fctidz instruction for them. Tested for powerpc. [BZ #16422] * sysdeps/powerpc/powerpc32/fpu/configure.ac (libc_cv_ppc_fctidz): New configure test. * sysdeps/powerpc/powerpc32/fpu/configure: Regenerated. * config.h.in [_LIBC] (HAVE_PPC_FCTIDZ): New macro. * sysdeps/powerpc/powerpc32/fpu/s_llrint.c: Include <limits.h>, <math_private.h> and <stdint.h>. (__llrint): Avoid conversions to long long int where those might raise spurious exceptions. * sysdeps/powerpc/powerpc32/fpu/s_llrintf.c: Include <math_private.h> and <stdint.h>. (__llrintf): Avoid conversions to long long int where those might raise spurious exceptions.
57 lines
2.0 KiB
Plaintext
57 lines
2.0 KiB
Plaintext
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
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# Local configure fragment for sysdeps/powerpc/powerpc32/fpu.
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# Test whether integer to floating point conversions use fcfid.
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fcfid use" >&5
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$as_echo_n "checking for fcfid use... " >&6; }
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if ${libc_cv_ppc_fcfid+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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echo 'double foo (int x) { return (double) x; }' > conftest.c
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libc_cv_ppc_fcfid=no
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if { ac_try='${CC-cc} -S $CFLAGS conftest.c -o conftest.s 1>&5'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }; then
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if grep '[ ]fcfid' conftest.s > /dev/null 2>&1; then
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libc_cv_ppc_fcfid=yes
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fi
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fi
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rm -rf conftest*
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ppc_fcfid" >&5
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$as_echo "$libc_cv_ppc_fcfid" >&6; }
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if test $libc_cv_ppc_fcfid = yes; then
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$as_echo "#define HAVE_PPC_FCFID 1" >>confdefs.h
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fi
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# Test whether floating point to long long conversions use fctidz.
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fctidz use" >&5
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$as_echo_n "checking for fctidz use... " >&6; }
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if ${libc_cv_ppc_fctidz+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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echo 'long long int foo (double x) { return (long long int) x; }' > conftest.c
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libc_cv_ppc_fctidz=no
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if { ac_try='${CC-cc} -S $CFLAGS conftest.c -o conftest.s 1>&5'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }; then
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if grep '[ ]fctidz' conftest.s > /dev/null 2>&1; then
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libc_cv_ppc_fctidz=yes
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fi
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fi
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rm -rf conftest*
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ppc_fctidz" >&5
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$as_echo "$libc_cv_ppc_fctidz" >&6; }
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if test $libc_cv_ppc_fctidz = yes; then
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$as_echo "#define HAVE_PPC_FCTIDZ 1" >>confdefs.h
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fi
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