Update.
2000-05-22 Andreas Jaeger <aj@suse.de> * math/Makefile: Add -D__FAST_MATH__ to CFLAGS-test-ifloat.c, CFLAGS-test-idouble.c, CFLAGS-test-ildoubl.c. * manual/math.texi (FP Function Optimizations): Document gcc -ffast-math behaviour with mathinlines. * sysdeps/i386/fpu/bits/mathinline.h: Only use save inline functions unless -ffast-math is given to gcc.
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Ulrich Drepper
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11
ChangeLog
11
ChangeLog
@ -1,3 +1,14 @@
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2000-05-22 Andreas Jaeger <aj@suse.de>
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* math/Makefile: Add -D__FAST_MATH__ to CFLAGS-test-ifloat.c,
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CFLAGS-test-idouble.c, CFLAGS-test-ildoubl.c.
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* manual/math.texi (FP Function Optimizations): Document gcc
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-ffast-math behaviour with mathinlines.
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* sysdeps/i386/fpu/bits/mathinline.h: Only use save inline
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functions unless -ffast-math is given to gcc.
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2000-05-23 Jakub Jelinek <jakub@redhat.com>
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* sysdeps/i386/fpu/bits/mathinline.h (__sincos, __sincosf,
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@ -1,3 +1,30 @@
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2000-05-24 Ulrich Drepper <drepper@redhat.com>
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* Makefile (libpthread-routines): Add pspinlock.
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* cancel.c: Rename __pthread_spin_unlock back to __pthread_unlock.
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Use struct _pthread_fastlock instead of pthread_spinlock_t.
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* condvar.c: Likewise.
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* internals.h: Likewise.
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* join.c: Likewise.
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* manager.c: Likewise.
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* mutex.c: Likewise.
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* pthread.c: Likewise.
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* rwlock.c: Likewise.
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* semaphore.c: Likewise.
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* signals.c: Likewise.
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* spinlock.h: Likewise.
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* spinlock.c: Likewise. Remove pthread_spin_lock functions.
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* sysdeps/alpha/pspinlock.c: New file.
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* sysdeps/arm/pspinlock.c: New file.
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* sysdeps/i386/pspinlock.c: New file.
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* sysdeps/m68k/pspinlock.c: New file.
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* sysdeps/mips/pspinlock.c: New file.
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* sysdeps/powerpc/pspinlock.c: New file.
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* sysdeps/sparc/sparc32/pspinlock.c: New file.
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* sysdeps/sparc/sparc64/pspinlock.c: New file.
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* sysdeps/pthread/bits/pthreadtypes.h: Remove pthread_spinlock_t
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back to _pthread_fastlock. Define new pthread_spinlock_t.
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2000-05-24 Andreas Jaeger <aj@suse.de>
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* sysdeps/i386/i686/pt-machine.h: Only use LDT on newer kernels.
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@ -1770,9 +1770,11 @@ This means that no calls to the library functions may be necessary, and
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can increase the speed of generated code significantly. The drawback is
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that code size will increase, and the increase is not always negligible.
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The speed increase has one drawback: the inline functions might not set
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@code{errno} and might not have the same precission as the library
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functions.
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There are two kind of inline functions: Those that give the same result
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as the library functions and others that might not set @code{errno} and
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might have a reduced precision and/or argument range in comparison with
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the library functions. The latter inline functions are only available
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if the flag @code{-ffast-math} is given to GNU CC.
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In cases where the inline functions and macros are not wanted the symbol
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@code{__NO_MATH_INLINES} should be defined before any system header is
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@ -116,9 +116,9 @@ endif
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CFLAGS-test-float.c = -fno-inline -ffloat-store
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CFLAGS-test-double.c = -fno-inline -ffloat-store
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CFLAGS-test-ldouble.c = -fno-inline -ffloat-store
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CFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES
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CFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES
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CFLAGS-test-ildoubl.c = -U__LIBC_INTERNAL_MATH_INLINES
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CFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__
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CFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__
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CFLAGS-test-ildoubl.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__
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LDLIBS-test-ifloat = math/libm
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LDLIBS-test-idouble = math/libm
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LDLIBS-test-ildoubl = math/libm
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@ -281,6 +281,8 @@ __signbitl (long double __x)
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__inline_mathcode (__sgn, __x, \
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return __x == 0.0 ? 0.0 : (__x > 0.0 ? 1.0 : -1.0))
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/* __FAST_MATH__ is defined by gcc -ffast-math. */
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#ifdef __FAST_MATH__
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__inline_mathcode (__pow2, __x, \
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register long double __value; \
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register long double __exponent; \
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@ -305,8 +307,8 @@ __inline_mathcode (__pow2, __x, \
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: "=t" (__value) : "0" (__value), "u" (__exponent)); \
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return __value)
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#ifdef __USE_GNU
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# define __sincos_code \
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# ifdef __USE_GNU
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# define __sincos_code \
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register long double __cosr; \
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register long double __sinr; \
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__asm __volatile__ \
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@ -345,13 +347,13 @@ __sincosl (long double __x, long double *__sinx, long double *__cosx)
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{
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__sincos_code;
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}
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#endif
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# endif
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/* Optimized inline implementation, sometimes with reduced precision
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and/or argument range. */
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#define __expm1_code \
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# define __expm1_code \
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register long double __value; \
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register long double __exponent; \
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register long double __temp; \
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@ -373,7 +375,7 @@ __sincosl (long double __x, long double *__sinx, long double *__cosx)
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__inline_mathcodeNP_ (long double, __expm1l, __x, __expm1_code)
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#define __exp_code \
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# define __exp_code \
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register long double __value; \
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register long double __exponent; \
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__asm __volatile__ \
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@ -403,27 +405,6 @@ __inline_mathcodeNP (tan, __x, \
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return __value)
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#define __atan2_code \
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register long double __value; \
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__asm __volatile__ \
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("fpatan" \
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: "=t" (__value) : "0" (__x), "u" (__y) : "st(1)"); \
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return __value
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__inline_mathcodeNP2 (atan2, __y, __x, __atan2_code)
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__inline_mathcodeNP2_ (long double, __atan2l, __y, __x, __atan2_code)
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__inline_mathcodeNP2 (fmod, __x, __y, \
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register long double __value; \
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__asm __volatile__ \
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("1: fprem\n\t" \
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"fnstsw %%ax\n\t" \
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"sahf\n\t" \
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"jp 1b" \
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: "=t" (__value) : "0" (__x), "u" (__y) : "ax", "cc"); \
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return __value)
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__inline_mathcodeNP2 (pow, __x, __y, \
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register long double __value; \
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register long double __exponent; \
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@ -472,6 +453,28 @@ __inline_mathcodeNP2 (pow, __x, __y, \
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("fscale" \
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: "=t" (__value) : "0" (__value), "u" (__exponent)); \
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return __value)
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#endif /* __FAST_MATH__ */
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#define __atan2_code \
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register long double __value; \
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__asm __volatile__ \
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("fpatan" \
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: "=t" (__value) : "0" (__x), "u" (__y) : "st(1)"); \
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return __value
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__inline_mathcodeNP2 (atan2, __y, __x, __atan2_code)
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__inline_mathcodeNP2_ (long double, __atan2l, __y, __x, __atan2_code)
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__inline_mathcodeNP2 (fmod, __x, __y, \
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register long double __value; \
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__asm __volatile__ \
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("1: fprem\n\t" \
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"fnstsw %%ax\n\t" \
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"sahf\n\t" \
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"jp 1b" \
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: "=t" (__value) : "0" (__x), "u" (__y) : "ax", "cc"); \
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return __value)
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__inline_mathopNP (sqrt, "fsqrt")
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@ -487,17 +490,20 @@ __inline_mathop (fabs, "fabs")
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__inline_mathop_ (long double, __fabsl, "fabs")
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#endif
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#ifdef __FAST_MATH__
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/* The argument range of this inline version is reduced. */
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__inline_mathopNP (sin, "fsin")
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/* The argument range of this inline version is reduced. */
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__inline_mathopNP (cos, "fcos")
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__inline_mathop_declNP (atan, "fld1; fpatan", "0" (__x) : "st(1)")
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__inline_mathop_declNP (log, "fldln2; fxch; fyl2x", "0" (__x) : "st(1)")
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__inline_mathop_declNP (log10, "fldlg2; fxch; fyl2x", "0" (__x) : "st(1)")
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__inline_mathcodeNP (asin, __x, return __atan2l (__x, __sqrtl (1.0 - __x * __x)))
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__inline_mathcodeNP (acos, __x, return __atan2l (__sqrtl (1.0 - __x * __x), __x))
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#endif /* __FAST_MATH__ */
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__inline_mathop_declNP (atan, "fld1; fpatan", "0" (__x) : "st(1)")
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__inline_mathcode_ (long double, __sgn1l, __x, \
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union { long double __xld; unsigned int __xi[3]; } __n = { __xld: __x }; \
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@ -713,10 +719,12 @@ __inline_mathcode (__acosh1p, __x, \
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#endif /* __USE_MISC */
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/* Undefine some of the large macros which are not used anymore. */
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#undef __expm1_code
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#undef __exp_code
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#undef __atan2_code
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#undef __sincos_code
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#ifdef __FAST_MATH__
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# undef __expm1_code
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# undef __exp_code
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# undef __sincos_code
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#endif /* __FAST_MATH__ */
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#endif /* __NO_MATH_INLINES */
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