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Similar to various other bugs in this area, some log1p implementations
do not raise the underflow exception for subnormal arguments, when the
result is tiny and inexact. This patch forces the exception in a
similar way to previous fixes. (The ldbl-128ibm implementation
doesn't currently need any change as it already generates this
exception, albeit through code that would generate spurious exceptions
in other cases; special code for this issue will only be needed there
when fixing the spurious exceptions.)
Tested for x86_64, x86, powerpc and mips64.
[BZ #16339]
* sysdeps/i386/fpu/s_log1p.S (dbl_min): New object.
(__log1p): Force underflow exception for results with small
absolute value.
* sysdeps/i386/fpu/s_log1pf.S (flt_min): New object.
(__log1pf): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/dbl-64/s_log1p.c: Include <float.h>.
(__log1p): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/flt-32/s_log1pf.c: Include <float.h>.
(__log1pf): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/ldbl-128/s_log1pl.c: Include <float.h>.
(__log1pl): Force underflow exception for results with small
absolute value.
* math/auto-libm-test-in: Do not allow missing underflow
exceptions from log1p.
* math/auto-libm-test-out: Regenerated.
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According to bug 6792, errno is not set to ERANGE/EDOM
by calling log1p/log1pf/log1pl with x = -1 or x < -1.
This patch adds a wrapper which sets errno in those cases
and returns the value of the existing __log1p function.
The log1p is now an alias to the wrapper function
instead of __log1p.
The files in sysdeps are reflecting these changes.
The ia64 implementation sets errno by itself,
thus the wrapper-file is empty.
The libm-test is adjusted for log1p-tests to check errno.
[BZ #6792]
* math/w_log1p.c: New file.
* math/w_log1pf.c: Likewise.
* math/w_log1pl.c: Likewise.
* math/Makefile (libm-calls): Add w_log1p.
* math/s_log1pl.c (log1pl): Remove weak_alias.
* sysdeps/i386/fpu/s_log1p.S (log1p): Likewise.
* sysdeps/i386/fpu/s_log1pf.S (log1pf): Likewise.
* sysdeps/i386/fpu/s_log1pl.S (log1pl): Likewise.
* sysdeps/x86_64/fpu/s_log1pl.S (log1pl): Likewise.
* sysdeps/ieee754/dbl-64/s_log1p.c (log1p): Likewise.
[NO_LONG_DOUBLE] (log1pl): Likewise.
* sysdeps/ieee754/flt-32/s_log1pf.c (log1pf): Likewise.
* sysdeps/ieee754/ldbl-128/s_log1pl.c (log1pl): Likewise.
* sysdeps/ieee754/ldbl-64-128/s_log1pl.c
(log1p): Remove long_double_symbol.
* sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (log1pl): Likewise.
* sysdeps/ieee754/ldbl-64-128/w_log1pl.c: New file.
* sysdeps/ieee754/ldbl-128ibm/w_log1pl.c: Likewise.
* sysdeps/m68k/m680x0/fpu/s_log1p.c: Define empty weak_alias to
remove weak_alias for corresponding log1p function.
* sysdeps/m68k/m680x0/fpu/s_log1pf.c: Likewise.
* sysdeps/m68k/m680x0/fpu/s_log1pl.c: Likewise.
* sysdeps/ia64/fpu/w_log1p.c: New file.
* sysdeps/ia64/fpu/w_log1pf.c: Likewise.
* sysdeps/ia64/fpu/w_log1pl.c: Likewise.
* math/libm-test.inc (log1p_test_data): Add errno expectations.
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as argument to the scripts.
* intl/tst-gettext2.sh: Use mkdir -p instead of test -d + mkdir.
* intl/tst-gettext4.sh: Likewise. Use run_program_prefix argument.
* intl/tst-gettext5.sh: Likewise.
* intl/tst-translit.sh: Add mkdir -p.
* sysdeps/unix/sysv/linux/i386/sysdep.h (SETUP_PIC_REG): Use
.ifndef/.endif to allow use of this macro more than once per .S
file.
(LOAD_PIC_REG): New macro.
* sysdeps/unix/sysv/linux/i386/makecontext.S: Add call frame
information.
* sysdeps/unix/sysv/linux/i386/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/i386/vfork.S: Likewise.
* sysdeps/i386/fpu/s_asinh.S: Use LOAD_PIC_REG macro. Add call frame
information.
* sysdeps/i386/fpu/e_log10f.S: Likewise.
* sysdeps/i386/fpu/s_expm1.S: Likewise.
* sysdeps/i386/fpu/e_acoshf.S: Likewise.
* sysdeps/i386/fpu/e_log2l.S: Likewise.
* sysdeps/i386/fpu/s_log1pf.S: Likewise.
* sysdeps/i386/fpu/s_lrint.S: Likewise.
* sysdeps/i386/fpu/s_llrint.S: Likewise.
* sysdeps/i386/fpu/s_ilogbf.S: Likewise.
* sysdeps/i386/fpu/s_cbrtl.S: Likewise.
* sysdeps/i386/fpu/s_asinhf.S: Likewise.
* sysdeps/i386/fpu/e_log.S: Likewise.
* sysdeps/i386/fpu/e_atanhf.S: Likewise.
* sysdeps/i386/fpu/s_lrintl.S: Likewise.
* sysdeps/i386/fpu/e_atanhl.S: Likewise.
* sysdeps/i386/fpu/e_scalb.S: Likewise.
* sysdeps/i386/fpu/s_log1p.S: Likewise.
* sysdeps/i386/fpu/s_nearbyintl.S: Likewise.
* sysdeps/i386/fpu/s_frexpl.S: Likewise.
* sysdeps/i386/fpu/s_log1pl.S: Likewise.
* sysdeps/i386/fpu/s_nearbyintf.S: Likewise.
* sysdeps/i386/fpu/s_cbrt.S: Likewise.
* sysdeps/i386/fpu/s_expm1l.S: Likewise.
* sysdeps/i386/fpu/s_lrintf.S: Likewise.
* sysdeps/i386/fpu/e_acosh.S: Likewise.
* sysdeps/i386/fpu/s_cexp.S: Likewise.
* sysdeps/i386/fpu/s_ilogbl.S: Likewise.
* sysdeps/i386/fpu/s_expm1f.S: Likewise.
* sysdeps/i386/fpu/e_powl.S: Likewise.
* sysdeps/i386/fpu/e_powf.S: Likewise.
* sysdeps/i386/fpu/e_scalbf.S: Likewise.
* sysdeps/i386/fpu/e_logl.S: Likewise.
* sysdeps/i386/fpu/e_acoshl.S: Likewise.
* sysdeps/i386/fpu/s_frexp.S: Likewise.
* sysdeps/i386/fpu/e_pow.S: Likewise.
* sysdeps/i386/fpu/e_logf.S: Likewise.
* sysdeps/i386/fpu/e_log2.S: Likewise.
* sysdeps/i386/fpu/s_frexpf.S: Likewise.
* sysdeps/i386/fpu/s_cexpl.S: Likewise.
* sysdeps/i386/fpu/s_llrintf.S: Likewise.
* sysdeps/i386/fpu/s_ilogb.S: Likewise.
* sysdeps/i386/fpu/e_scalbl.S: Likewise.
* sysdeps/i386/fpu/e_atanh.S: Likewise.
* sysdeps/i386/fpu/e_log10.S: Likewise.
* sysdeps/i386/fpu/s_cbrtf.S: Likewise.
* sysdeps/i386/fpu/s_cexpf.S: Likewise.
* sysdeps/i386/fpu/s_llrintl.S: Likewise.
* sysdeps/i386/fpu/e_log10l.S: Likewise.
* sysdeps/i386/fpu/s_nearbyint.S: Likewise.
* sysdeps/i386/fpu/s_asinhl.S: Likewise.
* sysdeps/i386/fpu/e_log2f.S: Likewise.
* sysdeps/i386/addmul_1.S: Various fixes to cfi handling.
* sysdeps/i386/mul_1.S: Likewise.
* sysdeps/i386/strtok.S: Likewise.
* sysdeps/i386/sub_n.S: Likewise.
* sysdeps/i386/submul_1.S: Likewise.
* sysdeps/i386/i586/addmul_1.S: Likewise.
* sysdeps/i386/i586/memcpy.S: Likewise.
* sysdeps/i386/i586/mul_1.S: Likewise.
* sysdeps/i386/i586/rshift.S: Likewise.
* sysdeps/i386/i586/sub_n.S: Likewise.
* sysdeps/i386/i586/submul_1.S: Likewise.
* sysdeps/i386/i686/memcmp.S: Likewise.
* sysdeps/i386/i686/memmove.S: Likewise.
* sysdeps/unix/sysv/linux/i386/clone.S: Likewise.
* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
* sysdeps/unix/sysv/linux/i386/setcontext.S: Likewise.
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1999-10-24 Ulrich Drepper <drepper@cygnus.com>
* math/libm-test.inc: Disable some boundary case tests for inline
function testing.
* math/math.h: Pretty printing.
* sysdeps/i386/fpu/e_atanh.S: Correct handling of NaN.
* sysdeps/i386/fpu/e_atanhf.S: Likewise.
* sysdeps/i386/fpu/e_atanhl.S: Likewise.
* sysdeps/i386/fpu/e_log10.S: Likewise.
* sysdeps/i386/fpu/e_log10f.S: Likewise.
* sysdeps/i386/fpu/e_log10l.S: Likewise.
* sysdeps/i386/fpu/s_log1p.S: Likewise.
* sysdeps/i386/fpu/s_log1pf.S: Likewise.
* sysdeps/i386/fpu/s_log1pl.S: Likewise.
* sysdeps/i386/fpu/s_log2.S: Likewise.
* sysdeps/i386/fpu/s_log2f.S: Likewise.
* sysdeps/i386/fpu/s_log2l.S: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: New file.
* sysdeps/i386/fpu/bits/mathinline.h (__expm1_code): Correct return
value for x == 0.
(pow): Correct case x == 0.
(__sgn1l): Correct handling of -0.0.
1999-10-22 Andreas Jaeger <aj@suse.de>
* math/libm-test.inc (asinh_test): Add test for NaN as input parameter.
(atan_test): Likewise.
(atanh_test): Likewise.
(atan2_test): Likewise.
(carg_test): Likewise.
(ceil_test): Likewise.
(cos_test): Likewise.
(cosh_test): Likewise.
(cpow_test): Likewise.
(erf_test): Likewise.
(erfc_test): Likewise.
(exp_test): Likewise.
(exp10_test): Likewise.
(exp2_test): Likewise.
(expm1_test): Likewise.
(fabs_test): Likewise.
(floor_test): Likewise.
(fmod_test): Likewise.
(gamma_test): Likewise.
(lgamma_test): Likewise.
(log10_test): Likewise.
(log1p_test): Likewise.
(log2_test): Likewise.
(logb_test): Likewise.
(nearbyint_test): Likewise.
(remainder_test): Likewise.
(remquo_test): Likewise.
(sin_test): Likewise.
(sincos_test): Likewise.
(sinh_test): Likewise.
(sqrt_test): Likewise.
(tan_test): Likewise.
(tanh_test): Likewise.
(tgamma_test): Likewise.
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