* mingwex/complex/(cabsl.c cacosl.c cacoshl.c cargl.c casinl.c

	casinhl.c catanl.c catanhl.c ccosl.c ccoshl.c cexpl.c cimagl.c
	clogl.c cpowl.c cprojl.c creall.c csinl.c csinhl.c csqrtl.c
	ctanl.c ctanhl.c): New files.
	* mingwex/Makefile.in (COMPLEX_DISTFILES): Adjust.
	(COMPLEX_OBJS): Adjust.
	* include/complex.h (cabsl, cacosl, cacoshl, cargl, casinf.
	casinhl, catanl, catanhl, ccosl, ccoshl, cexpl, cimagl, clogl,
	cpowl, cprojl, creall, csinl, csinhl, csqrtl, ctanl, ctanhl):
	Declare.

22 files changed, 618 insertions, 12 deletions

diff --git a/winsup/mingw/mingwex/Makefile.in b/winsup/mingw/mingwex/Makefile.in
index 66659a6..e79df9a 100644
--- a/winsup/mingw/mingwex/Makefile.in
+++ b/winsup/mingw/mingwex/Makefile.in
@@ -70,12 +70,15 @@ STDIO_DISTFILES = \
 	vfscanf.c vfwscanf.c vscanf.c vsscanf.c vswscanf.c vwscanf.c
 
 COMPLEX_DISTFILES = \
-	cabs.c cabsf.c cacos.c cacosf.c cacosh.c cacoshf.c carg.c \
-	cargf.c casin.c casinf.c casinh.c casinhf.c catan.c catanf.c \
-	catanh.c catanhf.c ccos.c ccosf.c ccosh.c ccoshf.c cexp.c \
-	cexpf.c cimag.c cimagf.c clog.c clogf.c cpow.c cpowf.c cproj.c \
-	cprojf.c creal.c crealf.c csin.c csinf.c csinh.c csinhf.c \
-	csqrt.c csqrtf.c ctan.c ctanf.c ctanh.c ctanhf.c
+	cabs.c cabsf.c cabsl.c cacos.c cacosf.c cacosl.c cacosh.c \
+	cacoshf.c cacoshl.c carg.c cargf.c cargl.c casin.c casinf.c \
+	casinl.c casinh.c casinhf.c casinhl.c catan.c catanf.c catanl.c \
+	catanh.c catanhf.c catanhl.c ccos.c ccosf.c ccosl.c ccosh.c \
+	ccoshf.c ccoshl.c cexp.c cexpf.c cexpl.c cimag.c cimagf.c \
+	cimagl.c clog.c clogf.c clogl.c cpow.c cpowf.c cpowl.c cproj.c \
+	cprojf.c cprojl.c creal.c crealf.c creall.c csin.c csinf.c \
+	csinl.c csinh.c csinhf.c csinhl.c csqrt.c csqrtf.c csqrtl.c \
+	ctan.c ctanf.c ctanl.c ctanh.c ctanhf.c ctanhl.c
 
 CC = @CC@
 # FIXME: Which is it, CC or CC_FOR_TARGET?
@@ -159,12 +162,15 @@ POSIX_OBJS = \
 REPLACE_OBJS = \
 	mingw-aligned-malloc.o mingw-fseek.o
 COMPLEX_OBJS = \
-	cabs.o cabsf.o cacos.o cacosf.o cacosh.o cacoshf.o carg.o \
-	cargf.o casin.o casinf.o casinh.o casinhf.o catan.o catanf.o \
-	catanh.o catanhf.o ccos.o ccosf.o ccosh.o ccoshf.o cexp.o \
-	cexpf.o cimag.o cimagf.o clog.o clogf.o cpow.o cpowf.o cproj.o \
-	cprojf.o creal.o crealf.o csin.o csinf.o csinh.o csinhf.o \
-	csqrt.o csqrtf.o ctan.o ctanf.o ctanh.o ctanhf.o
+	cabs.o cabsf.o cabsl.o cacos.o cacosf.o cacosl.o cacosh.o \
+	cacoshf.o cacoshl.o carg.o cargf.o cargl.o casin.o casinf.o \
+	casinl.o casinh.o casinhf.o casinhl.o catan.o catanf.o catanl.o \
+	catanh.o catanhf.o catanhl.o ccos.o ccosf.o ccosl.o ccosh.o \
+	ccoshf.o ccoshl.o cexp.o cexpf.o cexpl.o cimag.o cimagf.o \
+	cimagl.o clog.o clogf.o clogl.o cpow.o cpowf.o cpowl.o cproj.o \
+	cprojf.o cprojl.o creal.o crealf.o creall.o csin.o csinf.o \
+	csinl.o csinh.o csinhf.o csinhl.o csqrt.o csqrtf.o csqrtl.o \
+	ctan.o ctanf.o ctanl.o ctanh.o ctanhf.o ctanhl.o
 
 LIB_OBJS = $(Q8_OBJS) $(STDLIB_OBJS) $(STDLIB_STUB_OBJS) \
 	$(STDIO_OBJS) $(MATH_OBJS)  $(FENV_OBJS) \
diff --git a/winsup/mingw/mingwex/complex/cabsl.c b/winsup/mingw/mingwex/complex/cabsl.c
new file mode 100755
index 0000000..3312465
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/cabsl.c
@@ -0,0 +1,7 @@
+#include <math.h>
+#include <complex.h>
+
+long double cabsl (long double complex Z)
+{
+  return  hypotl ( __real__ Z,  __imag__ Z);
+}
diff --git a/winsup/mingw/mingwex/complex/cacoshl.c b/winsup/mingw/mingwex/complex/cacoshl.c
new file mode 100755
index 0000000..7f482c4
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/cacoshl.c
@@ -0,0 +1,39 @@
+/*
+   cacoshl.c
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+#if 0
+/* cacosh (z) = I * cacos (z)  */
+long double complex cacoshl (long double complex Z)
+{
+  long double complex Tmp;
+  long double complex Res;
+
+  Tmp = cacosl (Z);
+  __real__ Res = -__imag__ Tmp;
+  __imag__ Res = __real__ Tmp;
+  return Res;
+}
+
+#else
+
+/* cacosh (z) = I * cacos (z) = I * (pi/2 - casin (z))  */
+#ifndef _M_PI_2L
+#define _M_PI_2L 1.5707963267948966192313L
+#endif
+long double complex cacoshl (long double complex Z)
+{
+  long double complex Tmp;
+  long double complex Res;
+
+  Tmp = casinl (Z);
+  __real__ Res = __imag__ Tmp;
+  __imag__ Res =  _M_PI_2L - __real__ Tmp;
+  return Res;
+}
+#endif
diff --git a/winsup/mingw/mingwex/complex/cacosl.c b/winsup/mingw/mingwex/complex/cacosl.c
new file mode 100755
index 0000000..c8e0b6e
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/cacosl.c
@@ -0,0 +1,66 @@
+/*
+   cacosl.c
+   Contributed by Danny Smith
+   2004-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+#if 0
+/* cacos (Z) = -I * clog(Z + I * csqrt(1 - Z * Z)) */
+
+long double complex cacosl (long double  complex Z)
+{
+  long double complex Res;
+  long double x, y;
+
+  x = __real__ Z;
+  y = __imag__ Z;
+
+  if (y == 0.0L)
+    {
+      __real__ Res = acosl (x);
+      __imag__ Res = 0.0L;
+    }
+
+  else
+    {
+      long double complex ZZ;
+      /* Z * Z = ((x - y) * (x + y)) + (2.0 * x * y) * I */
+      /* caculate 1 - Z * Z */
+      __real__ ZZ = 1.0L - (x - y) * (x + y);
+      __imag__ ZZ = -2.0L * x * y;
+
+       
+       Res = csqrtl(ZZ);
+
+      /* calculate ZZ + I * sqrt (ZZ) */
+    
+      __real__ ZZ = x - __imag__ Res;
+      __imag__ ZZ = y + __real__ Res;
+       
+      ZZ = clogl(ZZ);
+
+      /* mult by -I */
+
+      __real__ Res  =  __imag__ ZZ;
+      __imag__ Res = - __real__ ZZ;
+    }
+  return Res;
+}
+
+#else
+
+/* cacos ( Z ) =  pi/2 - casin ( Z ) */
+#ifndef _M_PI_2L
+#define _M_PI_2L 1.5707963267948966192313L
+#endif
+long double complex cacosl (long double complex Z)
+{
+  long double complex Res  = casinl (Z);
+  __real__ Res = _M_PI_2L - __real__ Res;
+  __imag__ Res = - __imag__ Res;
+  return Res;
+}
+#endif
diff --git a/winsup/mingw/mingwex/complex/cargl.c b/winsup/mingw/mingwex/complex/cargl.c
new file mode 100755
index 0000000..179dae7
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/cargl.c
@@ -0,0 +1,8 @@
+#include <complex.h>
+long double   __attribute__ ((const)) cargl (long double _Complex _Z)
+{
+  long double res;
+  __asm__ ("fpatan;"
+	   : "=t" (res) : "0" (__real__ _Z), "u" (__imag__ _Z) : "st(1)");
+  return res;
+}
diff --git a/winsup/mingw/mingwex/complex/casinhl.c b/winsup/mingw/mingwex/complex/casinhl.c
new file mode 100755
index 0000000..348bf80
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/casinhl.c
@@ -0,0 +1,23 @@
+/*
+   casinhl.c
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+/* casinh (z) = -I casin (I * z) */
+
+long double complex casinhl (long double complex Z)
+{
+  long double complex Tmp;
+  long double complex Res;
+
+  __real__ Tmp = - __imag__ Z;
+  __imag__ Tmp =   __real__ Z;
+  Tmp = casinl (Tmp);
+  __real__ Res =   __imag__ Tmp;
+  __imag__ Res = - __real__ Tmp;
+  return Res;
+}
diff --git a/winsup/mingw/mingwex/complex/casinl.c b/winsup/mingw/mingwex/complex/casinl.c
new file mode 100755
index 0000000..3093fa5
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/casinl.c
@@ -0,0 +1,48 @@
+/*
+   casinl.c
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+/* casin (Z ) = -I * clog(I * Z + csqrt (1.0 - Z * Z))) */
+
+long double complex casinl (long double complex Z)
+{
+  long double complex Res;
+  long double x, y;
+
+  x = __real__ Z;
+  y = __imag__ Z;
+
+  if (y == 0.0L)
+    {
+      __real__ Res = asinl (x);
+      __imag__ Res = 0.0L;
+    }
+  else  /* -I * clog(I * Z + csqrt(1.0 - Z * Z))) */
+    {
+      long double complex ZZ;
+                                 
+      /* Z * Z = ((x - y) * (x + y)) + (2.0 * x * y) * I */
+      /* calculate 1 - Z * Z */
+      __real__ ZZ = 1.0L - (x - y) * (x + y);
+      __imag__ ZZ = -2.0L * x * y;
+      ZZ = csqrtl (ZZ);
+
+
+      /* add  I * Z  to ZZ */
+
+      __real__ ZZ -= y;
+      __imag__ ZZ += x;
+
+      ZZ = clogl (ZZ);
+
+      /* mult by -I */
+      __real__ Res = __imag__ ZZ;
+      __imag__ Res = - __real__ ZZ;  
+    }
+  return (Res);
+}
diff --git a/winsup/mingw/mingwex/complex/catanhl.c b/winsup/mingw/mingwex/complex/catanhl.c
new file mode 100755
index 0000000..50a3be9
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/catanhl.c
@@ -0,0 +1,23 @@
+/* catanhl.c */
+/*
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+/*  catanh (z) = -I * catan (I  * z)  */
+
+long double complex catanhl (long double complex Z)
+{
+  long double complex Tmp;
+  long double complex Res;
+
+  __real__ Tmp = - __imag__ Z;
+  __imag__ Tmp =   __real__ Z;
+  Tmp = catanl (Tmp);
+  __real__ Res =  __imag__ Tmp;
+  __imag__ Res = - __real__ Tmp;
+  return Res;
+}
diff --git a/winsup/mingw/mingwex/complex/catanl.c b/winsup/mingw/mingwex/complex/catanl.c
new file mode 100755
index 0000000..1fd6268
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/catanl.c
@@ -0,0 +1,53 @@
+/* catanl.c */
+
+/*
+   Contributed by Danny Smith
+   2005-01-04
+
+   FIXME: This needs some serious numerical analysis.
+*/
+
+#include <math.h>
+#include <complex.h>
+#include <errno.h>
+
+/* catan (z) = -I/2 * clog ((I + z) / (I - z)) */ 
+
+#ifndef _M_PI_2L
+#define _M_PI_2L 1.5707963267948966192313L
+#endif
+
+long double complex 
+catanl (long double complex Z)
+{
+  long double complex Res;
+  long double complex Tmp;
+  long double x = __real__ Z;
+  long double y = __imag__ Z;
+
+  if ( x == 0.0L && (1.0L - fabsl (y)) == 0.0L)
+    {
+      errno = ERANGE;
+      __real__ Res = HUGE_VALL;
+      __imag__ Res = HUGE_VALL;
+    }
+   else if (isinf (hypotl (x, y)))
+   {
+     __real__ Res = (x > 0 ? _M_PI_2L : -_M_PI_2L);
+     __imag__ Res = 0.0L;
+   }
+  else
+    {
+      __real__ Tmp = - x; 
+      __imag__ Tmp = 1.0L - y;
+
+      __real__ Res = x; 
+      __imag__ Res = y + 1.0L;
+
+      Tmp = clogl (Res/Tmp);	
+      __real__ Res  = - 0.5L * __imag__ Tmp;
+      __imag__ Res =  0.5L * __real__ Tmp;
+    }
+
+   return Res; 
+}
diff --git a/winsup/mingw/mingwex/complex/ccoshl.c b/winsup/mingw/mingwex/complex/ccoshl.c
new file mode 100755
index 0000000..0fb2526
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/ccoshl.c
@@ -0,0 +1,19 @@
+/*
+   ccoshl.c
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+/* ccosh (x + I * y) = cosh (x) * cos (y)
+    + I * (sinh (x) * sin (y)) */ 
+
+long double complex ccoshl (long double complex Z)
+{
+  long double complex Res;
+  __real__ Res = coshl (__real__ Z) * cosl (__imag__ Z);
+  __imag__ Res = sinhl (__real__ Z) * sinl (__imag__ Z);
+  return Res;
+}
diff --git a/winsup/mingw/mingwex/complex/ccosl.c b/winsup/mingw/mingwex/complex/ccosl.c
new file mode 100755
index 0000000..981fdf0
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/ccosl.c
@@ -0,0 +1,20 @@
+/*
+   ccosl.c
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+/* ccos (x + I * y) = cos (x) * cosh (y)
+    + I * (sin (x) * sinh (y)) */ 
+
+
+long double complex ccosl (long double complex Z)
+{
+  long double complex Res;
+  __real__ Res = cosl (__real__ Z) * coshl ( __imag__ Z);
+  __imag__ Res = -sinl (__real__ Z) * sinhl ( __imag__ Z);
+  return Res;
+}
diff --git a/winsup/mingw/mingwex/complex/cexpl.c b/winsup/mingw/mingwex/complex/cexpl.c
new file mode 100755
index 0000000..9f2ed26
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/cexpl.c
@@ -0,0 +1,19 @@
+/*
+   cexpl.c
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+/* cexp (x + I * y) = exp (x) * cos (y) + I * exp (x) * sin (y) */
+
+long double complex cexpl (long double complex Z)
+{
+  long double complex  Res;
+  long double rho = expl (__real__ Z);
+  __real__ Res = rho * cosl(__imag__ Z);
+  __imag__ Res = rho * sinl(__imag__ Z);
+  return Res;
+}
diff --git a/winsup/mingw/mingwex/complex/cimagl.c b/winsup/mingw/mingwex/complex/cimagl.c
new file mode 100755
index 0000000..9b023b4
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/cimagl.c
@@ -0,0 +1,5 @@
+#include <complex.h>
+long double __attribute__ ((const)) cimagl (long double complex _Z)
+{
+  return __imag__ _Z;
+}
diff --git a/winsup/mingw/mingwex/complex/clogl.c b/winsup/mingw/mingwex/complex/clogl.c
new file mode 100755
index 0000000..0114c91
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/clogl.c
@@ -0,0 +1,19 @@
+/*
+   clogl.c
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+/* clog (x + I * y) = log (hypot (x, y)) + I * atan2 (y, x) */
+
+#include <math.h>
+#include <complex.h>
+
+long double complex clogl (long double complex Z)
+{
+  long double complex Res;
+  __real__ Res = logl (hypotl (__real__ Z,  __imag__ Z));
+  __imag__ Res = cargl (Z);
+  return Res;
+}
+
diff --git a/winsup/mingw/mingwex/complex/cpowl.c b/winsup/mingw/mingwex/complex/cpowl.c
new file mode 100755
index 0000000..c614a6d
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/cpowl.c
@@ -0,0 +1,43 @@
+/*  cpowl.c */
+/*
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+/* cpow(X, Y) = cexp(X * clog(Y)) */
+
+#include <math.h>
+#include <complex.h>
+
+long double complex cpowl (long double complex X, long double complex Y)
+{
+  long double complex Res;
+  long double i;
+  long double r = hypotl (__real__ X, __imag__ X);
+  if (r == 0.0L)
+    {
+       __real__ Res = __imag__ Res = 0.0L;
+    }
+  else
+    {
+      long double rho;
+      long double theta;
+      i = cargl (X);
+      theta = i * __real__ Y;
+ 
+      if (__imag__ Y == 0.0L)
+	/* This gives slightly more accurate results in these cases. */
+   	rho = powl (r, __real__ Y);
+      else
+	{
+          r = logl (r);
+	  /* rearrangement of cexp(X * clog(Y)) */
+	  theta += r * __imag__ Y;
+	  rho = expl (r * __real__ Y - i * __imag__ Y);
+	}
+
+      __real__ Res = rho * cosl (theta);
+      __imag__ Res = rho * sinl (theta);
+    }
+  return  Res;
+}
diff --git a/winsup/mingw/mingwex/complex/cprojl.c b/winsup/mingw/mingwex/complex/cprojl.c
new file mode 100755
index 0000000..224d26f
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/cprojl.c
@@ -0,0 +1,22 @@
+/*
+   cprojl.c
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+/* Return the value of the projection onto the Riemann sphere.*/
+
+long double complex cprojl (long double complex Z)
+{
+  complex long double Res = Z;
+  if (isinf (__real__ Z) || isinf (__imag__ Z))
+    {
+      __real__ Res = HUGE_VALL;
+      __imag__ Res = copysignl (0.0L, __imag__ Z);
+    }
+  return Res;
+}
+
diff --git a/winsup/mingw/mingwex/complex/creall.c b/winsup/mingw/mingwex/complex/creall.c
new file mode 100755
index 0000000..62470d9
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/creall.c
@@ -0,0 +1,5 @@
+#include <complex.h>
+long double __attribute__ ((const)) creall (long double complex _Z)
+{
+  return __real__ _Z;
+}
diff --git a/winsup/mingw/mingwex/complex/csinhl.c b/winsup/mingw/mingwex/complex/csinhl.c
new file mode 100755
index 0000000..187ccf0
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/csinhl.c
@@ -0,0 +1,20 @@
+/* csinhl.c */
+/*
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+/* csinh (x + I * y) = sinh (x) * cos (y)
+    + I * (cosh (x) * sin (y)) */ 
+
+
+long double complex csinhl (long double complex Z)
+{
+  long double complex Res;
+  __real__ Res = sinhl (__real__ Z) * cosl (__imag__ Z);
+  __imag__ Res = coshl (__real__ Z) * sinl (__imag__ Z);
+  return Res;
+}
diff --git a/winsup/mingw/mingwex/complex/csinl.c b/winsup/mingw/mingwex/complex/csinl.c
new file mode 100755
index 0000000..2a98c7c
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/csinl.c
@@ -0,0 +1,21 @@
+/*  csinl.c */
+
+/*
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+/* csin (x + I * y) = sin (x) * cosh (y)
+    + I * (cos (x) * sinh (y)) */ 
+
+long double complex csinl (long double complex Z)
+{
+  long double complex Res;
+  __real__ Res = sinl (__real__ Z) * coshl ( __imag__ Z);
+  __imag__ Res = cosl (__real__ Z) * sinhl ( __imag__ Z);
+  return Res;
+}
+
diff --git a/winsup/mingw/mingwex/complex/csqrtl.c b/winsup/mingw/mingwex/complex/csqrtl.c
new file mode 100755
index 0000000..f058b21
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/csqrtl.c
@@ -0,0 +1,55 @@
+/*  csqrtl.c */
+/*
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+
+long double complex  csqrtl (long double complex Z)
+{
+  long double complex Res;
+  long double r;
+  long double x = __real__ Z;
+  long double y = __imag__ Z;
+
+  if (y == 0.0L)
+    {
+      if (x < 0.0L)
+        {
+ 	  __real__ Res = 0.0L;
+	  __imag__ Res = sqrtl (-x);
+        }
+      else
+        {
+ 	  __real__ Res = sqrtl (x);
+	  __imag__ Res = 0.0L;
+        }
+    }
+
+  else if (x == 0.0L)
+    {
+      r = sqrtl(0.5L * fabsl (y));
+      __real__ Res = y > 0 ? r : -r;
+      __imag__ Res = r;
+    }
+
+  else
+    {
+      long double t = sqrtl (2.0L * (hypotl (__real__ Z, __imag__ Z) + fabsl (x)));
+      long double u = t / 2.0L;
+      if ( x > 0.0L)
+        {	
+          __real__ Res = u;
+          __imag__ Res = y / t;
+        }
+      else
+        {
+	  __real__ Res = fabsl (y / t);
+	  __imag__ Res = y < 0 ? -u : u;
+        }
+    }
+
+  return Res;
+}
diff --git a/winsup/mingw/mingwex/complex/ctanhl.c b/winsup/mingw/mingwex/complex/ctanhl.c
new file mode 100755
index 0000000..050b636
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/ctanhl.c
@@ -0,0 +1,44 @@
+/*  ctanhl.c */
+
+/*
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+
+#include <math.h>
+#include <complex.h>
+#include <errno.h>
+
+/*
+  ctanh (x + I * y) = (sinh (2 * x)  +  sin (2 * y) * I )
+		     / (cosh (2 * x) + cos (2 * y)) .
+*/
+
+long double complex
+ctanhl (long double complex Z)
+{
+  long double complex Res;
+  long double two_R = 2.0L * __real__ Z;
+  long double two_I = 2.0L * __imag__ Z;
+  long double denom = coshl (two_R) + cosl (two_I);
+
+  if (denom == 0.0L)
+    {
+      errno = ERANGE;
+      __real__ Res = HUGE_VALL;
+      __imag__ Res = HUGE_VALL;
+    }
+  else if (isinf (denom))
+    {
+      errno = ERANGE;
+      __real__ Res = two_R > 0 ? 1.0L : -1.0L;
+      __imag__ Res = 0.0L;
+    }
+  else
+    {
+      __real__ Res = sinhl (two_R) / denom;
+      __imag__ Res = sinl (two_I) / denom;
+    }
+  return Res;
+}
diff --git a/winsup/mingw/mingwex/complex/ctanl.c b/winsup/mingw/mingwex/complex/ctanl.c
new file mode 100755
index 0000000..7d30761
--- /dev/null
+++ b/winsup/mingw/mingwex/complex/ctanl.c
@@ -0,0 +1,41 @@
+/* ctanl.c */
+
+/*
+   Contributed by Danny Smith
+   2005-01-04
+*/
+
+#include <math.h>
+#include <complex.h>
+#include <errno.h>
+
+
+/* ctan (x + I * y) = (sin (2 * x)  +  I * sinh(2 * y))
+		      / (cos (2 * x)  +  cosh (2 * y)) */
+
+long double complex ctanl (long double complex Z)
+{
+  long double complex Res;
+  long double two_I = 2.0L * __imag__ Z;
+  long double two_R = 2.0L * __real__ Z;
+  long double denom = cosl (two_R) + coshl (two_I);
+  if (denom == 0.0L)
+    {
+      errno = ERANGE;
+      __real__ Res = HUGE_VALL;
+      __imag__ Res = HUGE_VALL;
+    }
+  else if (isinf (denom))
+    {
+      errno = ERANGE;
+      __real__ Res = 0.0;
+      __imag__ Res = two_I > 0 ? 1.0L : -1.0L;
+    }
+  else
+    {
+      __real__ Res = sinl (two_R) / denom;
+      __imag__ Res = sinhl (two_I) / denom;
+    }
+  return Res;
+}
+