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head/lib/msun/man/sincos.3
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| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| .\" Copyright (c) 2011 Steven G. Kargl. | |||||
| .\" | |||||
| .\" Redistribution and use in source and binary forms, with or without | |||||
| .\" modification, are permitted provided that the following conditions | |||||
| .\" are met: | |||||
| .\" 1. Redistributions of source code must retain the above copyright | |||||
| .\" notice, this list of conditions and the following disclaimer. | |||||
| .\" 2. Redistributions in binary form must reproduce the above copyright | |||||
| .\" notice, this list of conditions and the following disclaimer in the | |||||
| .\" documentation and/or other materials provided with the distribution. | |||||
| .\" | |||||
| .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
| .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
| .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
| .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
| .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
| .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
| .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 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. | |||||
| .\" | |||||
| .\" $FreeBSD$ | |||||
| .\" | |||||
| .Dd March 12, 2011 | |||||
| .Dt SINCOS 3 | |||||
| .Os | |||||
| .Sh NAME | |||||
| .Nm sincos , | |||||
| .Nm sincosf , | |||||
| .Nm sincosl | |||||
| .Nd sine and cosine functions | |||||
| .Sh LIBRARY | |||||
| .Lb libm | |||||
| .Sh SYNOPSIS | |||||
| .In math.h | |||||
| .Ft void | |||||
| .Fn sincos "double x" "double *s" "double *c" | |||||
| .Ft void | |||||
| .Fn sincosf "float x" "float *s" "float *c" | |||||
| .Ft void | |||||
| .Fn sincosl "long double x" "long double *s" "long double *c" | |||||
| .Sh DESCRIPTION | |||||
| The | |||||
| .Fn sincos , | |||||
| .Fn sincosf , | |||||
| and | |||||
| .Fn sincosl | |||||
| functions compute the sine and cosine of | |||||
| .Fa x . | |||||
| Using these functions allows argument reduction to occur only | |||||
| once instead of twice with individual invocations of | |||||
| .Fn sin | |||||
| and | |||||
| .Fn cos . | |||||
| Like | |||||
| .Fn sin | |||||
| and | |||||
| .Fn cos , | |||||
| a large magnitude argument may yield a result with little | |||||
| or no significance. | |||||
| .Sh RETURN VALUES | |||||
| Upon returning from | |||||
| .Fn sincos , | |||||
| .Fn sincosf , | |||||
| and | |||||
| .Fn sincosl , | |||||
| the memory pointed to by | |||||
| .Ar "*s" | |||||
| and | |||||
| .Ar "*c" | |||||
| are assigned the values of sine and cosine, respectively. | |||||
| .Sh SEE ALSO | |||||
| .Xr cos 3 , | |||||
| .Xr sin 3 , | |||||
| .Sh HISTORY | |||||
| These functions were added to | |||||
| .Fx 9.0 | |||||
| to aid in writing various complex function contained in | |||||
| .St -isoC-99 . | |||||