Print this page
11210 libm should be cstyle(1ONBLD) clean
*** 20,29 ****
--- 20,30 ----
*/
/*
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
*/
+
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
*** 71,205 ****
#include "libm.h"
#include "longdouble.h"
#include <sys/isa_defs.h>
! #define I(q, m) ((int *) &(q))[m]
! #define U(q, m) ((unsigned *) &(q))[m]
#if defined(__i386) || defined(__amd64)
! #define LDBL_MOST_SIGNIF_I(ld) ((I(ld, 2) << 16) | (0xffff & (I(ld, 1) >> 15)))
#define LDBL_LEAST_SIGNIF_U(ld) U(ld, 0)
#define PREC 64
#define PRECM1 63
#define PRECM2 62
static const long double twoPRECM2 = 9.223372036854775808000000000000000e+18L;
#else
#define LDBL_MOST_SIGNIF_I(ld) I(ld, 0)
! #define LDBL_LEAST_SIGNIF_U(ld) U(ld, sizeof(long double) / sizeof(int) - 1)
#define PREC 113
#define PRECM1 112
#define PRECM2 111
static const long double twoPRECM2 = 5.192296858534827628530496329220096e+33L;
#endif
! static const long double
! zero = 0.0L,
! quater = 0.25L,
! one = 1.0L,
! pi = 3.141592653589793238462643383279502884197e+0000L,
! sqrth = 0.707106781186547524400844362104849039284835937688474,
! tiny = 1.0e-100;
void
! sincospil(long double x, long double *s, long double *c) {
long double y, z, t;
int hx, n, k;
unsigned lx;
hx = LDBL_MOST_SIGNIF_I(x);
lx = LDBL_LEAST_SIGNIF_U(x);
k = ((hx & 0x7fff0000) >> 16) - 0x3fff;
if (k >= PRECM2) { /* |x| >= 2**(Prec-2) */
if (k >= 16384) {
*s = *c = x - x;
! }
! else {
if (k >= PREC) {
*s = zero;
*c = one;
! }
! else if (k == PRECM1) {
if ((lx & 1) == 0) {
*s = zero;
*c = one;
! }
! else {
*s = -zero;
*c = -one;
}
! }
! else { /* k = Prec - 2 */
if ((lx & 1) == 0) {
*s = zero;
*c = one;
! }
! else {
*s = one;
*c = zero;
}
if ((lx & 2) != 0) {
*s = -*s;
*c = -*c;
}
}
}
! }
! else if (k < -2) /* |x| < 0.25 */
*s = __k_sincosl(pi * fabsl(x), zero, c);
! else {
/* y = |4x|, z = floor(y), and n = (int)(z mod 8.0) */
y = 4.0L * fabsl(x);
if (k < PRECM2) {
z = y + twoPRECM2;
n = LDBL_LEAST_SIGNIF_U(z) & 7; /* 3 LSb of z */
t = z - twoPRECM2;
k = 0;
! if (t == y)
k = 1;
! else if (t > y) {
n -= 1;
t = quater + (y - t) * quater;
! }
! else
t = (y - t) * quater;
}
! else { /* k = Prec-3 */
n = LDBL_LEAST_SIGNIF_U(y) & 7; /* 3 LSb of z */
k = 1;
}
if (k) { /* x = N/4 */
! if ((n & 1) != 0)
*s = *c = sqrth + tiny;
! else
! if ((n & 2) == 0) {
*s = zero;
*c = one;
! }
! else {
*s = one;
*c = zero;
}
if ((n & 4) != 0)
*s = -*s;
if (((n + 1) & 4) != 0)
*c = -*c;
! }
! else {
if ((n & 1) != 0)
t = quater - t;
if (((n + (n & 1)) & 2) == 0)
*s = __k_sincosl(pi * t, zero, c);
else
*c = __k_sincosl(pi * t, zero, s);
if ((n & 4) != 0)
*s = -*s;
if (((n + 2) & 4) != 0)
*c = -*c;
}
}
if (hx < 0)
*s = -*s;
}
#undef U
#undef LDBL_LEAST_SIGNIF_U
#undef I
#undef LDBL_MOST_SIGNIF_I
--- 72,212 ----
#include "libm.h"
#include "longdouble.h"
#include <sys/isa_defs.h>
! #define I(q, m) ((int *)&(q))[m]
! #define U(q, m) ((unsigned *)&(q))[m]
#if defined(__i386) || defined(__amd64)
! #define LDBL_MOST_SIGNIF_I(ld) ((I(ld, 2) << 16) | (0xffff & (I(ld, \
! 1) >> 15)))
#define LDBL_LEAST_SIGNIF_U(ld) U(ld, 0)
#define PREC 64
#define PRECM1 63
#define PRECM2 62
+
static const long double twoPRECM2 = 9.223372036854775808000000000000000e+18L;
#else
#define LDBL_MOST_SIGNIF_I(ld) I(ld, 0)
! #define LDBL_LEAST_SIGNIF_U(ld) U(ld, sizeof (long double) / \
! sizeof (int) - 1)
#define PREC 113
#define PRECM1 112
#define PRECM2 111
+
static const long double twoPRECM2 = 5.192296858534827628530496329220096e+33L;
#endif
! static const long double zero = 0.0L,
! quater = 0.25L,
! one = 1.0L,
! pi = 3.141592653589793238462643383279502884197e+0000L,
! sqrth = 0.707106781186547524400844362104849039284835937688474,
! tiny = 1.0e-100;
void
! sincospil(long double x, long double *s, long double *c)
! {
long double y, z, t;
int hx, n, k;
unsigned lx;
hx = LDBL_MOST_SIGNIF_I(x);
lx = LDBL_LEAST_SIGNIF_U(x);
k = ((hx & 0x7fff0000) >> 16) - 0x3fff;
+
if (k >= PRECM2) { /* |x| >= 2**(Prec-2) */
if (k >= 16384) {
*s = *c = x - x;
! } else {
if (k >= PREC) {
*s = zero;
*c = one;
! } else if (k == PRECM1) {
if ((lx & 1) == 0) {
*s = zero;
*c = one;
! } else {
*s = -zero;
*c = -one;
}
! } else { /* k = Prec - 2 */
if ((lx & 1) == 0) {
*s = zero;
*c = one;
! } else {
*s = one;
*c = zero;
}
+
if ((lx & 2) != 0) {
*s = -*s;
*c = -*c;
}
}
}
! } else if (k < -2) { /* |x| < 0.25 */
*s = __k_sincosl(pi * fabsl(x), zero, c);
! } else {
/* y = |4x|, z = floor(y), and n = (int)(z mod 8.0) */
y = 4.0L * fabsl(x);
+
if (k < PRECM2) {
z = y + twoPRECM2;
n = LDBL_LEAST_SIGNIF_U(z) & 7; /* 3 LSb of z */
t = z - twoPRECM2;
k = 0;
!
! if (t == y) {
k = 1;
! } else if (t > y) {
n -= 1;
t = quater + (y - t) * quater;
! } else {
t = (y - t) * quater;
}
! } else { /* k = Prec-3 */
n = LDBL_LEAST_SIGNIF_U(y) & 7; /* 3 LSb of z */
k = 1;
}
+
if (k) { /* x = N/4 */
! if ((n & 1) != 0) {
*s = *c = sqrth + tiny;
! } else if ((n & 2) == 0) {
*s = zero;
*c = one;
! } else {
*s = one;
*c = zero;
}
+
if ((n & 4) != 0)
*s = -*s;
+
if (((n + 1) & 4) != 0)
*c = -*c;
! } else {
if ((n & 1) != 0)
t = quater - t;
+
if (((n + (n & 1)) & 2) == 0)
*s = __k_sincosl(pi * t, zero, c);
else
*c = __k_sincosl(pi * t, zero, s);
+
if ((n & 4) != 0)
*s = -*s;
+
if (((n + 2) & 4) != 0)
*c = -*c;
}
}
+
if (hx < 0)
*s = -*s;
}
+
#undef U
#undef LDBL_LEAST_SIGNIF_U
#undef I
#undef LDBL_MOST_SIGNIF_I