| '\" t |
| .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) |
| .\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk |
| .\" <mtk.manpages@gmail.com> |
| .\" |
| .\" SPDX-License-Identifier: Linux-man-pages-copyleft |
| .\" |
| .\" References consulted: |
| .\" Linux libc source code |
| .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) |
| .\" 386BSD man pages |
| .\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu) |
| .\" Modified 2002-07-27 by Walter Harms |
| .\" (walter.harms@informatik.uni-oldenburg.de) |
| .\" |
| .TH sin 3 (date) "Linux man-pages (unreleased)" |
| .SH NAME |
| sin, sinf, sinl \- sine function |
| .SH LIBRARY |
| Math library |
| .RI ( libm ,\~ \-lm ) |
| .SH SYNOPSIS |
| .nf |
| .B #include <math.h> |
| .P |
| .BI "double sin(double " x ); |
| .BI "float sinf(float " x ); |
| .BI "long double sinl(long double " x ); |
| .fi |
| .P |
| .RS -4 |
| Feature Test Macro Requirements for glibc (see |
| .BR feature_test_macros (7)): |
| .RE |
| .P |
| .BR sinf (), |
| .BR sinl (): |
| .nf |
| _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L |
| || /* Since glibc 2.19: */ _DEFAULT_SOURCE |
| || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE |
| .fi |
| .SH DESCRIPTION |
| These functions return the sine of |
| .IR x , |
| where |
| .I x |
| is |
| given in radians. |
| .SH RETURN VALUE |
| On success, these functions return the sine of |
| .IR x . |
| .P |
| If |
| .I x |
| is a NaN, a NaN is returned. |
| .P |
| If |
| .I x |
| is positive infinity or negative infinity, |
| a domain error occurs, |
| and a NaN is returned. |
| .\" |
| .\" POSIX.1 allows an optional range error for subnormal x |
| .\" glibc 2.8 doesn't do this |
| .SH ERRORS |
| See |
| .BR math_error (7) |
| for information on how to determine whether an error has occurred |
| when calling these functions. |
| .P |
| The following errors can occur: |
| .TP |
| Domain error: \fIx\fP is an infinity |
| .I errno |
| is set to |
| .B EDOM |
| (but see BUGS). |
| An invalid floating-point exception |
| .RB ( FE_INVALID ) |
| is raised. |
| .SH ATTRIBUTES |
| For an explanation of the terms used in this section, see |
| .BR attributes (7). |
| .TS |
| allbox; |
| lbx lb lb |
| l l l. |
| Interface Attribute Value |
| T{ |
| .na |
| .nh |
| .BR sin (), |
| .BR sinf (), |
| .BR sinl () |
| T} Thread safety MT-Safe |
| .TE |
| .SH STANDARDS |
| C11, POSIX.1-2008. |
| .SH HISTORY |
| C99, POSIX.1-2001. |
| .P |
| The variant returning |
| .I double |
| also conforms to |
| SVr4, 4.3BSD, C89. |
| .SH BUGS |
| Before glibc 2.10, the glibc implementation did not set |
| .\" https://www.sourceware.org/bugzilla/show_bug.cgi?id=6781 |
| .I errno |
| to |
| .B EDOM |
| when a domain error occurred. |
| .SH SEE ALSO |
| .BR acos (3), |
| .BR asin (3), |
| .BR atan (3), |
| .BR atan2 (3), |
| .BR cos (3), |
| .BR csin (3), |
| .BR sincos (3), |
| .BR tan (3) |
