diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/s_rint.c')
-rw-r--r-- | sysdeps/ieee754/dbl-64/s_rint.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_rint.c b/sysdeps/ieee754/dbl-64/s_rint.c index dd01a84176..66c9196473 100644 --- a/sysdeps/ieee754/dbl-64/s_rint.c +++ b/sysdeps/ieee754/dbl-64/s_rint.c @@ -1,4 +1,3 @@ -/* @(#)s_rint.c 5.1 93/09/24 */ /* * ==================================================== * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. @@ -26,38 +25,39 @@ #include <libm-alias-double.h> static const double - TWO52[2] = { - 4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */ - -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */ +TWO52[2] = { + 4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */ + -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */ }; double __rint (double x) { - int32_t i0, j0, sx; - double w, t; - GET_HIGH_WORD (i0, x); - sx = (i0 >> 31) & 1; - j0 = ((i0 >> 20) & 0x7ff) - 0x3ff; + int64_t i0, sx; + int32_t j0; + EXTRACT_WORDS64 (i0, x); + sx = (i0 >> 63) & 1; + j0 = ((i0 >> 52) & 0x7ff) - 0x3ff; if (j0 < 52) { if (j0 < 0) { - w = TWO52[sx] + x; - t = w - TWO52[sx]; - GET_HIGH_WORD (i0, t); - SET_HIGH_WORD (t, (i0 & 0x7fffffff) | (sx << 31)); + double w = TWO52[sx] + x; + double t = w - TWO52[sx]; + EXTRACT_WORDS64 (i0, t); + INSERT_WORDS64 (t, (i0 & UINT64_C (0x7fffffffffffffff)) + | (sx << 63)); return t; } } else { if (j0 == 0x400) - return x + x; /* inf or NaN */ + return x + x; /* inf or NaN */ else - return x; /* x is integral */ + return x; /* x is integral */ } - w = TWO52[sx] + x; + double w = TWO52[sx] + x; return w - TWO52[sx]; } #ifndef __rint |