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authorRichard Henderson <rth@twiddle.net>2012-03-10 08:53:05 -0800
committerRichard Henderson <rth@twiddle.net>2012-03-19 06:50:41 -0700
commit0fe0f1f86f82f9e08ca4d4b85111de03f4c2f876 (patch)
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Create and use libc_feupdateenv_test.
We can reduce the number of STMXCSR, and often we can avoid the call to __feraiseexcept.
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2012-03-19 Richard Henderson <rth@twiddle.net>
+ * sysdeps/generic/math_private.h (default_libc_feupdateenv_test): New.
+ (libc_feupdateenv_test, libc_feupdateenv_testf): New.
+ (libc_feupdateenv_testl): New.
+ * sysdeps/x86_64/fpu/math_private.h (libc_feupdateenv_test): New.
+ (libc_feupdateenv_testf): New.
+ (libc_feupdateenv): Use libc_feupdateenv_test.
+ * sysdeps/ieee754/dbl-64/s_fma.c (__fma): Use libc_feupdateenv_test.
+ * sysdeps/ieee754/dbl-64/s_fmaf.c (__fmaf): Likewise.
+
* sysdeps/generic/math_private.h (libc_feholdsetround): New.
(libc_feholdsetroundf, libc_feholdsetroundl): New.
(libc_feresetround, libc_feresetroundf, libc_feresetroundl): New.