mirror of
https://sourceware.org/git/glibc.git
synced 2025-01-11 11:50:06 +00:00
f8e8b8ed9f
TS 18661-1 defines functions for manipulating the payloads of NaNs. This patch implements the getpayload functions for glibc; these extract the NaN payload (from an argument passed as a pointer, for which corresponding libm-test support is added) and return it in the same floating-point type. The return value of these functions is unspecified for non-NaN arguments; the patch does the simplest thing to implement, which is that the functions do not check whether the argument is a NaN and just treat the relevant bits of the representation as a payload regardless. A conversion from integer to floating-point is used to produce the required return value, except in the ldbl-128 case; as 128-bit integers are not supported for all configurations using ldbl-128, the code constructs the required floating-point representation of the return value directly instead. Tested for x86_64, x86, mips64 and powerpc. * math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (getpayload): New declaration. * math/Versions (getpayload): New libm symbol at version GLIBC_2.25. (getpayloadf): Likewise. (getpayloadl): Likewise. * math/Makefile (libm-calls): Add s_getpayloadF. * math/libm-test.inc: Include <nan-high-order-bit.h>. (struct test_f_f_data): Add comment. (RUN_TEST_fp_f): New macro. (RUN_TEST_LOOP_fp_f): Likewise. (getpayload_test_data): New array. (getpayload_test): New function. (main): Call getpayload_test. * math/gen-libm-test.pl (parse_args): Handle 'p' in argument descriptor. * manual/arith.texi (FP Bit Twiddling): Document getpayload, getpayloadf and getpayloadl. * manual/libm-err-tab.pl: Update comment on interfaces without ulps tabulated. * sysdeps/ieee754/dbl-64/s_getpayload.c: New file. * sysdeps/ieee754/dbl-64/wordsize-64/s_getpayload.c: Likewise. * sysdeps/ieee754/flt-32/s_getpayloadf.c: Likewise. * sysdeps/ieee754/ldbl-128/s_getpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_getpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_getpayloadl.c: Likewise. * sysdeps/nacl/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise. |
||
|---|---|---|
| .. | ||
| e_acosf.c | ||
| e_acoshf.c | ||
| e_asinf.c | ||
| e_atan2f.c | ||
| e_atanhf.c | ||
| e_coshf.c | ||
| e_exp2f.c | ||
| e_expf.c | ||
| e_fmodf.c | ||
| e_gammaf_r.c | ||
| e_hypotf.c | ||
| e_ilogbf.c | ||
| e_j0f.c | ||
| e_j1f.c | ||
| e_jnf.c | ||
| e_lgammaf_r.c | ||
| e_log2f.c | ||
| e_log10f.c | ||
| e_logf.c | ||
| e_powf.c | ||
| e_rem_pio2f.c | ||
| e_remainderf.c | ||
| e_sinhf.c | ||
| e_sqrtf.c | ||
| k_cosf.c | ||
| k_rem_pio2f.c | ||
| k_sinf.c | ||
| k_tanf.c | ||
| lgamma_negf.c | ||
| lgamma_productf.c | ||
| mpn2flt.c | ||
| s_asinhf.c | ||
| s_atanf.c | ||
| s_cbrtf.c | ||
| s_ceilf.c | ||
| s_copysignf.c | ||
| s_cosf.c | ||
| s_erff.c | ||
| s_expm1f.c | ||
| s_fabsf.c | ||
| s_finitef.c | ||
| s_floorf.c | ||
| s_fpclassifyf.c | ||
| s_frexpf.c | ||
| s_getpayloadf.c | ||
| s_isinff.c | ||
| s_isnanf.c | ||
| s_issignalingf.c | ||
| s_llrintf.c | ||
| s_llroundf.c | ||
| s_log1pf.c | ||
| s_logbf.c | ||
| s_lrintf.c | ||
| s_lroundf.c | ||
| s_modff.c | ||
| s_nearbyintf.c | ||
| s_nextafterf.c | ||
| s_nextupf.c | ||
| s_remquof.c | ||
| s_rintf.c | ||
| s_roundf.c | ||
| s_scalblnf.c | ||
| s_scalbnf.c | ||
| s_signbitf.c | ||
| s_sincosf.c | ||
| s_sinf.c | ||
| s_tanf.c | ||
| s_tanhf.c | ||
| s_totalorderf.c | ||
| s_totalordermagf.c | ||
| s_truncf.c | ||
| t_exp2f.h | ||
| w_expf.c | ||