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  12 .TH sin 3M "12 Jul 2006" "SunOS 5.11" "Mathematical Library Functions"
  13 .SH NAME
  14 sin, sinf, sinl \- sine function
  15 .SH SYNOPSIS
  16 .LP
  17 .nf
  18 c99 [ \fIflag\fR... ] \fIfile\fR... \fB-lm\fR [ \fIlibrary\fR... ]
  19 #include <math.h>
  20 
  21 \fBdouble\fR \fBsin\fR(\fBdouble\fR \fIx\fR);
  22 .fi
  23 
  24 .LP
  25 .nf
  26 \fBfloat\fR \fBsinf\fR(\fBfloat\fR \fIx\fR);
  27 .fi
  28 
  29 .LP
  30 .nf
  31 \fBlong double\fR \fBsinl\fR(\fBlong double\fR \fIx\fR);
  32 .fi
  33 
  34 .SH DESCRIPTION
  35 .sp
  36 .LP
  37 These functions compute the sine of its argument \fIx\fR, measured in radians.
  38 .SH RETURN VALUES
  39 .sp
  40 .LP
  41 Upon successful completion, these functions return the sine of \fIx\fR.
  42 .sp
  43 .LP
  44 If \fIx\fR is NaN, a NaN is returned.
  45 .sp
  46 .LP
  47 If \fIx\fR is \(+-0, \fIx\fR is returned.
  48 .sp
  49 .LP
  50 If \fIx\fR is \(+-Inf, a domain error occurs and a NaN is returned.
  51 .SH ERRORS
  52 .sp
  53 .LP
  54 These functions will fail if:
  55 .sp
  56 .ne 2
  57 .mk
  58 .na
  59 \fBDomain Error\fR
  60 .ad
  61 .RS 16n
  62 .rt  
  63 The \fIx\fR argument is \(+-Inf.
  64 .sp
  65 If the integer expression (\fBmath_errhandling\fR & \fBMATH_ERREXCEPT\fR) is
  66 non-zero, then the invalid floating-point exception is raised.
  67 .RE
  68 
  69 .SH USAGE
  70 .sp
  71 .LP
  72 An application wanting to check for exceptions should call
  73 \fBfeclearexcept\fR(\fBFE_ALL_EXCEPT\fR) before calling these functions. On
  74 return, if \fBfetestexcept\fR(\fBFE_INVALID\fR | \fBFE_DIVBYZERO\fR |
  75 \fBFE_OVERFLOW\fR | \fBFE_UNDERFLOW\fR) is non-zero, an exception has been
  76 raised. An application should either examine the return value or check the
  77 floating point exception flags to detect exceptions.
  78 .SH ATTRIBUTES
  79 .sp
  80 .LP
  81 See \fBattributes\fR(5) for descriptions of the following attributes:
  82 .sp
  83 
  84 .sp
  85 .TS
  86 tab() box;
  87 cw(2.75i) |cw(2.75i) 
  88 lw(2.75i) |lw(2.75i) 
  89 .
  90 ATTRIBUTE TYPEATTRIBUTE VALUE
  91 _
  92 Interface StabilityStandard
  93 _
  94 MT-LevelMT-Safe
  95 .TE
  96 
  97 .SH SEE ALSO
  98 .sp
  99 .LP
 100 \fBasin\fR(3M), \fBfeclearexcept\fR(3M), \fBfetestexcept\fR(3M),
 101 \fBisnan\fR(3M), \fBmath.h\fR(3HEAD), \fBattributes\fR(5), \fBstandards\fR(5)