sincos(3) [xfree86 man page]
SINCOS(3) Linux Programmer's Manual SINCOS(3) NAME
sincos, sincosf, sincosl - calculate sin and cos simultaneously SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <math.h> void sincos(double x, double *sin, double *cos); void sincosf(float x, float *sin, float *cos); void sincosl(long double x, long double *sin, long double *cos); Link with -lm. DESCRIPTION
Several applications need sine and cosine of the same angle x. These functions compute both at the same time, and store the results in *sin and *cos. Using this function can be more efficient than two separate calls to sin(3) and cos(3). If x is a NaN, a NaN is returned in *sin and *cos. If x is positive infinity or negative infinity, a domain error occurs, and a NaN is returned in *sin and *cos. RETURN VALUE
These functions return void. ERRORS
See math_error(7) for information on how to determine whether an error has occurred when calling these functions. The following errors can occur: Domain error: x is an infinity An invalid floating-point exception (FE_INVALID) is raised. These functions do not set errno. VERSIONS
These functions first appeared in glibc in version 2.1. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +-------------------------------+---------------+---------+ |Interface | Attribute | Value | +-------------------------------+---------------+---------+ |sincos(), sincosf(), sincosl() | Thread safety | MT-Safe | +-------------------------------+---------------+---------+ CONFORMING TO
These functions are GNU extensions. NOTES
To see the performance advantage of sincos(), it may be necessary to disable gcc(1) builtin optimizations, using flags such as: cc -O -lm -fno-builtin prog.c SEE ALSO
cos(3), sin(3), tan(3) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. GNU
2017-09-15 SINCOS(3)
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SINCOS(3) Linux Programmer's Manual SINCOS(3) NAME
sincos, sincosf, sincosl - calculate sin and cos simultaneously SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <math.h> void sincos(double x, double *sin, double *cos); void sincosf(float x, float *sin, float *cos); void sincosl(long double x, long double *sin, long double *cos); Link with -lm. DESCRIPTION
Several applications need sine and cosine of the same angle x. These functions compute both at the same time, and store the results in *sin and *cos. Using this function can be more efficient than two separate calls to sin(3) and cos(3). If x is a NaN, a NaN is returned in *sin and *cos. If x is positive infinity or negative infinity, a domain error occurs, and a NaN is returned in *sin and *cos. RETURN VALUE
These functions return void. ERRORS
See math_error(7) for information on how to determine whether an error has occurred when calling these functions. The following errors can occur: Domain error: x is an infinity An invalid floating-point exception (FE_INVALID) is raised. These functions do not set errno. VERSIONS
These functions first appeared in glibc in version 2.1. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +-------------------------------+---------------+---------+ |Interface | Attribute | Value | +-------------------------------+---------------+---------+ |sincos(), sincosf(), sincosl() | Thread safety | MT-Safe | +-------------------------------+---------------+---------+ CONFORMING TO
These functions are GNU extensions. NOTES
To see the performance advantage of sincos(), it may be necessary to disable gcc(1) builtin optimizations, using flags such as: cc -O -lm -fno-builtin prog.c SEE ALSO
cos(3), sin(3), tan(3) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. GNU
2017-09-15 SINCOS(3)