From bcd797a5ba4631c031919dad832d670e564212e9 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Tue, 3 Sep 2013 15:02:10 +0000
Subject: math: long double inverse trigonometric cleanup (acosl, asinl, atanl,
 atan2l)

* added ld128 support from freebsd fdlibm (untested)
* using new ldshape union instead of IEEEl2bits
* inexact status flag is not supported
---
 src/math/__invtrigl.c | 34 +++++++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

(limited to 'src/math/__invtrigl.c')

diff --git a/src/math/__invtrigl.c b/src/math/__invtrigl.c
index f2d33d3e..ef7f4e1b 100644
--- a/src/math/__invtrigl.c
+++ b/src/math/__invtrigl.c
@@ -1,7 +1,7 @@
+#include <float.h>
 #include "__invtrigl.h"
 
 #if LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
-
 static const long double
 pS0 =  1.66666666666666666631e-01L,
 pS1 = -4.16313987993683104320e-01L,
@@ -28,4 +28,36 @@ long double __invtrigl_R(long double z)
 	q = 1.0+z*(qS1+z*(qS2+z*(qS3+z*(qS4+z*qS5))));
 	return p/q;
 }
+#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
+static const long double
+pS0 =  1.66666666666666666666666666666700314e-01L,
+pS1 = -7.32816946414566252574527475428622708e-01L,
+pS2 =  1.34215708714992334609030036562143589e+00L,
+pS3 = -1.32483151677116409805070261790752040e+00L,
+pS4 =  7.61206183613632558824485341162121989e-01L,
+pS5 = -2.56165783329023486777386833928147375e-01L,
+pS6 =  4.80718586374448793411019434585413855e-02L,
+pS7 = -4.42523267167024279410230886239774718e-03L,
+pS8 =  1.44551535183911458253205638280410064e-04L,
+pS9 = -2.10558957916600254061591040482706179e-07L,
+qS1 = -4.84690167848739751544716485245697428e+00L,
+qS2 =  9.96619113536172610135016921140206980e+00L,
+qS3 = -1.13177895428973036660836798461641458e+01L,
+qS4 =  7.74004374389488266169304117714658761e+00L,
+qS5 = -3.25871986053534084709023539900339905e+00L,
+qS6 =  8.27830318881232209752469022352928864e-01L,
+qS7 = -1.18768052702942805423330715206348004e-01L,
+qS8 =  8.32600764660522313269101537926539470e-03L,
+qS9 = -1.99407384882605586705979504567947007e-04L;
+
+const long double pio2_hi = 1.57079632679489661923132169163975140L;
+const long double pio2_lo = 4.33590506506189051239852201302167613e-35L;
+
+long double __invtrigl_R(long double z)
+{
+	long double p, q;
+	p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*(pS5+z*(pS6+z*(pS7+z*(pS8+z*pS9)))))))));
+	q = 1.0+z*(qS1+z*(qS2+z*(qS3+z*(qS4+z*(qS5+z*(pS6+z*(pS7+z*(pS8+z*pS9))))))));
+	return p/q;
+}
 #endif
-- 
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