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* src/math_private.h:

Browse Source 
. Change the API for the LD80C by removing the explicit passing
    of the sign bit.  The sign can be determined from the last
    parameter of the macro.
  . On i386, load long double by bit manipulations to work around
    at least a gcc compiler issue.  On non-i386 ld80 architectures,
    use a simple assignment.

* ld80/s_expl.c:
  . Update the only consumer of LD80C.

Submitted by:	bde
Approved by:	das (mentor)
This commit is contained in:
Steve Kargl 2012-09-29 16:40:12 +00:00
parent 000811380d
commit a077586c53
2 changed files with 11 additions and 7 deletions
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4
lib/msun/ld80/s_expl.c
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@ -60,9 +60,9 @@ static volatile const long double tiny = 0x1p-10000L;
static const union IEEEl2bits
/* log(2**16384 - 0.5) rounded towards zero: */
o_threshold = LD80C(0xb17217f7d1cf79ab, 13, 0, 11356.5234062941439488L),
o_threshold = LD80C(0xb17217f7d1cf79ab, 13, 11356.5234062941439488L),
/* log(2**(-16381-64-1)) rounded towards zero: */
u_threshold = LD80C(0xb21dfe7f09e2baa9, 13, 1, -11399.4985314888605581L);
u_threshold = LD80C(0xb21dfe7f09e2baa9, 13, -11399.4985314888605581L);
static const double __aligned(64)
/*

14
lib/msun/src/math_private.h
View File

@ -207,12 +207,16 @@ do { \
(d) = se_u.e; \
} while (0)
/* Long double constants are broken on i386. This workaround is OK always. */
#define LD80C(m, ex, s, v) { \
/* .e = v, */ /* overwritten */ \
.xbits.man = __CONCAT(m, ULL), \
.xbits.expsign = (0x3fff + (ex)) | ((s) ? 0x8000 : 0), \
#ifdef __i386__
/* Long double constants are broken on i386. */
#define LD80C(m, ex, v) { \
.xbits.man = __CONCAT(m, ULL), \
.xbits.expsign = (0x3fff + (ex)) | ((v) < 0 ? 0x8000 : 0), \
}
#else
/* The above works on non-i386 too, but we use this to check v. */
#define LD80C(m, ex, v) { .e = (v), }
#endif
#ifdef FLT_EVAL_METHOD
/*