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- Ported cosf(), coshf(), sinf(), sinhf(), tanf(), tanhf()

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and hypotf() for C99.


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14964 87f5fb63-7c3d-0410-a384-fd976d0f7a62
This commit is contained in:
Olaf Barthel
2005-05-30 08:10:41 +00:00
parent 3c220c3939
commit 3975d234bd
19 changed files with 1042 additions and 80 deletions
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39
library/math_sinf.c
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@@ -1,5 +1,5 @@
/*
* $Id: math_sinf.c,v 1.1 2005-05-29 11:19:01 obarthel Exp $
* $Id: math_sinf.c,v 1.2 2005-05-30 08:10:38 obarthel Exp $
*
* :ts=4
*
@@ -29,6 +29,18 @@
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*
* PowerPC math library based in part on work by Sun Microsystems
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
*
*
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
*/
#ifndef _MATH_HEADERS_H
@@ -44,8 +56,29 @@
float
sinf(float x)
{
/* ZZZ unimplemented */
return(0);
float y[2],z=0.0;
LONG n,ix;
GET_FLOAT_WORD(ix,x);
/* |x| ~< pi/4 */
ix &= 0x7fffffff;
if(ix <= 0x3f490fd8) return __kernel_sinf(x,z,0);
/* sin(Inf or NaN) is NaN */
else if (ix>=0x7f800000) return x-x;
/* argument reduction needed */
else {
n = __rem_pio2f(x,y);
switch(n&3) {
case 0: return __kernel_sinf(y[0],y[1],1);
case 1: return __kernel_cosf(y[0],y[1]);
case 2: return -__kernel_sinf(y[0],y[1],1);
default:
return -__kernel_cosf(y[0],y[1]);
}
}
}
/****************************************************************************/