view modules/acosl @ 15943:617d0805c8d8

acosl: Simplify for platforms where 'long double' == 'double'. * lib/acosl.c (acosl) [HAVE_SAME_LONG_DOUBLE_AS_DOUBLE]: New alternative implementation. * m4/acosl.m4 (gl_FUNC_ACOSL): Require gl_LONG_DOUBLE_VS_DOUBLE. Determine ACOSL_LIBM according to HAVE_SAME_LONG_DOUBLE_AS_DOUBLE. * modules/acosl (Depends-on): Add acos. Update conditions.
author Bruno Haible <bruno@clisp.org>
date Tue, 11 Oct 2011 11:15:25 +0200
parents f31b7f55cb96
children
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Description:
acosl() function: inverse cosine function with long double argument.

Files:
lib/acosl.c
m4/acosl.m4

Depends-on:
math
extensions
acos            [test $HAVE_ACOSL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1]
asinl           [test $HAVE_ACOSL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
sqrtl           [test $HAVE_ACOSL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]

configure.ac:
gl_FUNC_ACOSL
if test $HAVE_ACOSL = 0; then
  AC_LIBOBJ([acosl])
fi
gl_MATH_MODULE_INDICATOR([acosl])

Makefile.am:

Include:
<math.h>

Link:
$(ACOSL_LIBM)

License:
LGPL

Maintainer:
Paolo Bonzini