Add hyperbolic functions: sinh, cosh, and others.

* arith.c (sinh_s, cosh_s, tanh_s, asinh_s, acosh_s, atanh_s):
New symbol variables.
(sinh, cosh, tanh, asinh, acosh, atanh): New static functions.
(sineh, cosih, tangh, asineh, acosih, atangh): New functions.
(arith_init): Register sinh, cosh, tanh, asinh, acosh and
atanh intrinsic functions, and initialize the new symbol
variables.

* configure: Detect availability of hyperbolic functions in
math library and defne HAVE_HYPERBOLICS as 1 in config.h
accordingly.

* lib.h (sineh, cosih, tangh, asineh, acosih, atangh):
Declared.

* txr.1: Documented new hyperbolic functions and their method
counterparts that a numeric struct can implement.

1 files changed, 6 insertions, 0 deletions

diff --git a/lib.h b/lib.h
index 4ac4f3b1..276b8ecb 100644
--- a/lib.h
+++ b/lib.h
@@ -787,6 +787,12 @@ val asine(val);
 val acosi(val);
 val atang(val);
 val atang2(val, val);
+val sineh(val);
+val cosih(val);
+val tangh(val);
+val asineh(val);
+val acosih(val);
+val atangh(val);
 val loga(val);
 val logten(val num);
 val logtwo(val num);