From 60f0e64b3c13cf717fd49d327dbbca88568ca647 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sat, 19 Aug 2000 16:58:09 +0000 Subject: Update. * malloc/mtrace.pl (usage): Inform about --help. 2000-08-19 Wolfram Gloger * malloc/malloc.c (new_heap): try harder to get an aligned chunk of size HEAP_MAX_SIZE. 2000-08-19 Andreas Jaeger * shlib-versions: Remove libnss_db, libdb and libdb1. 2000-08-19 Jakub Jelinek * sysdeps/unix/sysv/linux/alpha/readdir.c: Move... * sysdeps/unix/sysv/linux/ia64/readdir.c: ...here and * sysdeps/unix/sysv/linux/sparc/sparc64/readdir.c: ...here. * sysdeps/unix/sysv/linux/alpha/readdir_r.c: Move... * sysdeps/unix/sysv/linux/ia64/readdir_r.c: ...here and * sysdeps/unix/sysv/linux/sparc/sparc64/readdir_r.c: ...here. * sysdeps/unix/sysv/linux/alpha/readdir64.c: Remove. * sysdeps/unix/sysv/linux/alpha/readdir64_r.c: Remove. * sysdeps/unix/sysv/linux/alpha/getdents64.c: Remove. * sysdeps/unix/sysv/linux/alpha/getdents.c: Only use for non-LFS getdents. * sysdeps/unix/sysv/linux/readdir64.c: Remove versioning. * sysdeps/unix/sysv/linux/readdir64_r.c: Likewise. 2000-08-18 Jakub Jelinek * include/glob.h (__glob64): Add prototype. * sysdeps/generic/glob.c: If GLOB_ONLY_P is defined, only define glob and glob_in_dir. * sysdeps/unix/sysv/linux/i386/Versions: Add glob64@@GLIBC_2.2. * sysdeps/unix/sysv/linux/arm/Versions: Likewise. * sysdeps/unix/sysv/linux/powerpc/Versions: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/Versions: Likewise. * sysdeps/unix/sysv/linux/i386/glob64.c: New file. * sysdeps/unix/sysv/linux/arm/glob64.c: New file. * sysdeps/unix/sysv/linux/powerpc/glob64.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc32/glob64.c: New file. 2000-08-18 Jakub Jelinek * malloc/Makefile (memusage): libmemusage.so is installed in slibdir. 2000-08-17 Andreas Jaeger * math/test-fenv.c (fe_single_test): New function. (fe_env_tests): Use fe_single_test. (feenable_test): New tests for feenable/fedisable and fegetexcpetions. (feexcp_mask_test): New function. (feexcp_nomask_test): New function. 2000-08-19 Richard Henderson * sysdeps/alpha/fpu/fenv_libc.h: New file. * sysdeps/alpha/fpu/fclrexcpt.c: Use it. * sysdeps/alpha/fpu/fegetenv.c: Likewise. * sysdeps/alpha/fpu/fesetround.c: Likewise. * sysdeps/alpha/fpu/fegetround.c: Likewise. * sysdeps/alpha/fpu/fgetexcptflg.c: Likewise. * sysdeps/alpha/fpu/fraiseexcpt.c: Likewise. * sysdeps/alpha/fpu/ftestexcept.c: Likewise. * sysdeps/alpha/fpu/fedisblxcpt.c: Likewise. Use the smaller mask. * sysdeps/alpha/fpu/feenablxcpt.c: Likewise. * sysdeps/alpha/fpu/fegetexcept.c: Likewise. * sysdeps/alpha/fpu/feholdexcpt.c: Retain the SWCR_MAP bits. * sysdeps/alpha/fpu/fesetenv.c: Likewise. * sysdeps/alpha/fpu/feupdateenv.c: Likewise. * sysdeps/alpha/fpu/fsetexcptflg.c: Likewise. * sysdeps/alpha/fpu/bits/fenv.h (FE_DENORMAL): New. (FE_MAP_DMZ, FE_MAP_UMZ, FE_NONIEEE_ENV): New. 2000-08-19 Andreas Jaeger --- sysdeps/alpha/fpu/bits/fenv.h | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) (limited to 'sysdeps/alpha/fpu/bits') diff --git a/sysdeps/alpha/fpu/bits/fenv.h b/sysdeps/alpha/fpu/bits/fenv.h index 82b85debcd..b6d9b98c86 100644 --- a/sysdeps/alpha/fpu/bits/fenv.h +++ b/sysdeps/alpha/fpu/bits/fenv.h @@ -36,6 +36,11 @@ enum { +#ifdef __USE_GNU + FE_DENORMAL = 1UL << 22, +#define FE_DENORMAL FE_DENORMAL +#endif + FE_INEXACT = 1UL << 21, #define FE_INEXACT FE_INEXACT @@ -51,12 +56,10 @@ enum FE_INVALID = 1UL << 17, #define FE_INVALID FE_INVALID - FE_ALL_EXCEPT = - (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) + FE_ALL_EXCEPT = 0x3f << 17 #define FE_ALL_EXCEPT FE_ALL_EXCEPT }; - /* Alpha chips support all four defined rouding modes. Note that code must be compiled to use dynamic rounding (/d) instructions @@ -81,6 +84,19 @@ enum #define FE_UPWARD FE_UPWARD }; +#ifdef __USE_GNU +/* On later hardware, and later kernels for earlier hardware, we can forcibly + underflow denormal inputs and outputs. This can speed up certain programs + significantly, usually without affecting accuracy. */ +enum + { + FE_MAP_DMZ = 1UL << 12, /* Map denorm inputs to zero */ +#define FE_MAP_DMZ FE_MAP_DMZ + + FE_MAP_UMZ = 1UL << 13, /* Map underflowed outputs to zero */ +#define FE_MAP_UMZ FE_MAP_UMZ + }; +#endif /* Type representing exception flags. */ typedef unsigned long int fexcept_t; @@ -96,6 +112,10 @@ typedef unsigned long int fenv_t; #ifdef __USE_GNU /* Floating-point environment where none of the exceptions are masked. */ # define FE_NOMASK_ENV ((fenv_t *) 0x880000000000003eUL) + +/* Floating-point environment with (processor-dependent) non-IEEE floating + point. In this case, mapping denormals to zero. */ +# define FE_NONIEEE_ENV ((fenv_t *) 0x8800000000003000UL) #endif /* The system calls to talk to the kernel's FP code. */ -- cgit v1.2.3