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11210 libm should be cstyle(1ONBLD) clean
*** 20,37 ****
*/
/*
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma weak __ctanh = ctanh
! /* INDENT OFF */
/*
* dcomplex ctanh(dcomplex z);
*
* tanh x + i tan y sinh 2x + i sin 2y
* ctanh z = --------------------- = --------------------
--- 20,38 ----
*/
/*
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
*/
+
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma weak __ctanh = ctanh
!
/*
* dcomplex ctanh(dcomplex z);
*
* tanh x + i tan y sinh 2x + i sin 2y
* ctanh z = --------------------- = --------------------
*** 85,103 ****
* ctanh(inf,NaN) = (1, +-0)
* ctanh(NaN,0) = (NaN,0)
* ctanh(NaN,y) = (NaN,NaN) for non-zero y
* ctanh(NaN,NaN) = (NaN,NaN)
*/
- /* INDENT ON */
#include "libm.h" /* exp/expm1/fabs/sin/tanh/sincos */
#include "complex_wrapper.h"
static const double four = 4.0, two = 2.0, one = 1.0, zero = 0.0;
dcomplex
! ctanh(dcomplex z) {
double t, r, v, u, x, y, S, C;
int hx, ix, lx, hy, iy, ly;
dcomplex ans;
x = D_RE(z);
--- 86,104 ----
* ctanh(inf,NaN) = (1, +-0)
* ctanh(NaN,0) = (NaN,0)
* ctanh(NaN,y) = (NaN,NaN) for non-zero y
* ctanh(NaN,NaN) = (NaN,NaN)
*/
#include "libm.h" /* exp/expm1/fabs/sin/tanh/sincos */
#include "complex_wrapper.h"
static const double four = 4.0, two = 2.0, one = 1.0, zero = 0.0;
dcomplex
! ctanh(dcomplex z)
! {
double t, r, v, u, x, y, S, C;
int hx, ix, lx, hy, iy, ly;
dcomplex ans;
x = D_RE(z);
*** 113,125 ****
if ((iy | ly) == 0) { /* ctanh(x,0) = (x,0) for x = 0 or NaN */
D_RE(ans) = tanh(x);
D_IM(ans) = zero;
} else if (iy >= 0x7ff00000) { /* y is inf or NaN */
! if (ix < 0x7ff00000) /* catanh(finite x,inf/nan) is nan */
D_RE(ans) = D_IM(ans) = y - y;
! else if (((ix - 0x7ff00000) | lx) == 0) { /* x is inf */
D_RE(ans) = one;
D_IM(ans) = zero;
} else {
D_RE(ans) = x + y;
D_IM(ans) = y - y;
--- 114,126 ----
if ((iy | ly) == 0) { /* ctanh(x,0) = (x,0) for x = 0 or NaN */
D_RE(ans) = tanh(x);
D_IM(ans) = zero;
} else if (iy >= 0x7ff00000) { /* y is inf or NaN */
! if (ix < 0x7ff00000) { /* catanh(finite x,inf/nan) is nan */
D_RE(ans) = D_IM(ans) = y - y;
! } else if (((ix - 0x7ff00000) | lx) == 0) { /* x is inf */
D_RE(ans) = one;
D_IM(ans) = zero;
} else {
D_RE(ans) = x + y;
D_IM(ans) = y - y;
*** 128,176 ****
/*
* |x| > 28 = prec/2 (14,28,34,60)
* ctanh z ~ 1 + i (sin2y)/(exp(2x))
*/
D_RE(ans) = one;
! if (iy < 0x7fe00000) /* t = sin(2y) */
S = sin(y + y);
! else {
(void) sincos(y, &S, &C);
S = (S + S) * C;
}
if (ix >= 0x7fe00000) { /* |x| > max/2 */
if (ix >= 0x7ff00000) { /* |x| is inf or NaN */
if (((ix - 0x7ff00000) | lx) != 0)
D_RE(ans) = D_IM(ans) = x + y;
/* x is NaN */
else
D_IM(ans) = zero * S; /* x is inf */
! } else
D_IM(ans) = S * exp(-x); /* underflow */
! } else
D_IM(ans) = (S + S) * exp(-(x + x));
/* 2 sin 2y / exp(2x) */
} else {
! /* INDENT OFF */
/*
* t*t+2t
* ctanh z = --------------------------- +
* t*t+[4(t+1)(cos y)](cos y)
*
* [4(t+1)(cos y)]*(sin y)
* i --------------------------
* t*t+[4(t+1)(cos y)](cos y)
*/
! /* INDENT ON */
(void) sincos(y, &S, &C);
t = expm1(x + x);
r = (four * C) * (t + one);
u = t * t;
v = one / (u + r * C);
D_RE(ans) = (u + two * t) * v;
D_IM(ans) = (r * S) * v;
}
if (hx < 0)
D_RE(ans) = -D_RE(ans);
if (hy < 0)
D_IM(ans) = -D_IM(ans);
return (ans);
}
--- 129,185 ----
/*
* |x| > 28 = prec/2 (14,28,34,60)
* ctanh z ~ 1 + i (sin2y)/(exp(2x))
*/
D_RE(ans) = one;
!
! if (iy < 0x7fe00000) { /* t = sin(2y) */
S = sin(y + y);
! } else {
(void) sincos(y, &S, &C);
S = (S + S) * C;
}
+
if (ix >= 0x7fe00000) { /* |x| > max/2 */
if (ix >= 0x7ff00000) { /* |x| is inf or NaN */
if (((ix - 0x7ff00000) | lx) != 0)
D_RE(ans) = D_IM(ans) = x + y;
/* x is NaN */
else
D_IM(ans) = zero * S; /* x is inf */
! } else {
D_IM(ans) = S * exp(-x); /* underflow */
! }
! } else {
D_IM(ans) = (S + S) * exp(-(x + x));
+ }
+
/* 2 sin 2y / exp(2x) */
} else {
! /* BEGIN CSTYLED */
/*
* t*t+2t
* ctanh z = --------------------------- +
* t*t+[4(t+1)(cos y)](cos y)
*
* [4(t+1)(cos y)]*(sin y)
* i --------------------------
* t*t+[4(t+1)(cos y)](cos y)
*/
! /* END CSTYLED */
(void) sincos(y, &S, &C);
t = expm1(x + x);
r = (four * C) * (t + one);
u = t * t;
v = one / (u + r * C);
D_RE(ans) = (u + two * t) * v;
D_IM(ans) = (r * S) * v;
}
+
if (hx < 0)
D_RE(ans) = -D_RE(ans);
+
if (hy < 0)
D_IM(ans) = -D_IM(ans);
+
return (ans);
}