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authorZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
committerZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
commit5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch)
tree4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/ieee754/ldbl-128ibm/s_logbl.c
parent199fc19d3aaaf57944ef036e15904febe877fc93 (diff)
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Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_logbl.c')
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/s_logbl.c63
1 files changed, 0 insertions, 63 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_logbl.c b/sysdeps/ieee754/ldbl-128ibm/s_logbl.c
deleted file mode 100644
index 3c07c5e8e2..0000000000
--- a/sysdeps/ieee754/ldbl-128ibm/s_logbl.c
+++ /dev/null
@@ -1,63 +0,0 @@
-/* s_logbl.c -- long double version of s_logb.c.
- * Conversion to IEEE quad long double by Jakub Jelinek, jj@ultra.linux.cz.
- */
-
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunPro, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- */
-
-/*
- * long double logbl(x)
- * IEEE 754 logb. Included to pass IEEE test suite. Not recommend.
- * Use ilogb instead.
- */
-
-#include <math.h>
-#include <math_private.h>
-#include <math_ldbl_opt.h>
-#include <fix-int-fp-convert-zero.h>
-
-long double
-__logbl (long double x)
-{
- int64_t hx, hxs, rhx;
- double xhi, xlo;
-
- ldbl_unpack (x, &xhi, &xlo);
- EXTRACT_WORDS64 (hx, xhi);
- hxs = hx;
- hx &= 0x7fffffffffffffffLL; /* high |x| */
- if (hx == 0)
- return -1.0 / fabs (x);
- if (hx >= 0x7ff0000000000000LL)
- return x * x;
- if (__glibc_unlikely ((rhx = hx >> 52) == 0))
- {
- /* POSIX specifies that denormal number is treated as
- though it were normalized. */
- rhx -= __builtin_clzll (hx) - 12;
- }
- else if ((hx & 0x000fffffffffffffLL) == 0)
- {
- /* If the high part is a power of 2, and the low part is nonzero
- with the opposite sign, the low part affects the
- exponent. */
- int64_t lx;
- EXTRACT_WORDS64 (lx, xlo);
- if ((hxs ^ lx) < 0 && (lx & 0x7fffffffffffffffLL) != 0)
- rhx--;
- }
- if (FIX_INT_FP_CONVERT_ZERO && rhx == 1023)
- return 0.0L;
- return (long double) (rhx - 1023);
-}
-#ifndef __logbl
-long_double_symbol (libm, __logbl, logbl);
-#endif