diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_modfl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/s_modfl.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_modfl.c b/sysdeps/ieee754/ldbl-128ibm/s_modfl.c deleted file mode 100644 index 260cc3e33c..0000000000 --- a/sysdeps/ieee754/ldbl-128ibm/s_modfl.c +++ /dev/null @@ -1,96 +0,0 @@ -/* s_modfl.c -- long double version of s_modf.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. - * ==================================================== - */ - -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: $"; -#endif - -/* - * modfl(long double x, long double *iptr) - * return fraction part of x, and return x's integral part in *iptr. - * Method: - * Bit twiddling. - * - * Exception: - * No exception. - */ - -#include <math.h> -#include <math_private.h> -#include <math_ldbl_opt.h> - -static const long double one = 1.0; - -long double __modfl(long double x, long double *iptr) -{ - int64_t i0,i1,j0; - u_int64_t i; - double xhi, xlo; - - ldbl_unpack (x, &xhi, &xlo); - EXTRACT_WORDS64 (i0, xhi); - EXTRACT_WORDS64 (i1, xlo); - i1 &= 0x000fffffffffffffLL; - j0 = ((i0>>52)&0x7ff)-0x3ff; /* exponent of x */ - if(j0<52) { /* integer part in high x */ - if(j0<0) { /* |x|<1 */ - /* *iptr = +-0 */ - INSERT_WORDS64 (xhi, i0&0x8000000000000000ULL); - *iptr = xhi; - return x; - } else { - i = (0x000fffffffffffffLL)>>j0; - if(((i0&i)|(i1&0x7fffffffffffffffLL))==0) { /* x is integral */ - *iptr = x; - /* return +-0 */ - INSERT_WORDS64 (xhi, i0&0x8000000000000000ULL); - x = xhi; - return x; - } else { - INSERT_WORDS64 (xhi, i0&(~i)); - *iptr = xhi; - return x - *iptr; - } - } - } else if (j0>103) { /* no fraction part */ - *iptr = x*one; - /* We must handle NaNs separately. */ - if ((i0 & 0x7fffffffffffffffLL) > 0x7ff0000000000000LL) - return x*one; - /* return +-0 */ - INSERT_WORDS64 (xhi, i0&0x8000000000000000ULL); - x = xhi; - return x; - } else { /* fraction part in low x */ - i = -1ULL>>(j0-52); - if((i1&i)==0) { /* x is integral */ - *iptr = x; - /* return +-0 */ - INSERT_WORDS64 (xhi, i0&0x8000000000000000ULL); - x = xhi; - return x; - } else { - INSERT_WORDS64 (xhi, i0); - INSERT_WORDS64 (xlo, i1&(~i)); - *iptr = ldbl_pack (xhi, xlo); - return x - *iptr; - } - } -} -#if IS_IN (libm) -long_double_symbol (libm, __modfl, modfl); -#else -long_double_symbol (libc, __modfl, modfl); -#endif |