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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] 11 .TH llround 3M "12 Jul 2006" "SunOS 5.11" "Mathematical Library Functions" 12 .SH NAME 13 llround, llroundf, llroundl \- round to nearest integer value 14 .SH SYNOPSIS 15 .LP 16 .nf 17 c99 [ \fIflag\fR... ] \fIfile\fR... \fB-lm\fR [ \fIlibrary\fR... ] 18 #include <math.h> 19 20 \fBlong long\fR \fBllround\fR(\fBdouble\fR \fIx\fR); 21 .fi 22 23 .LP 24 .nf 25 \fBlong long\fR \fBllroundf\fR(\fBfloat\fR \fIx\fR); 26 .fi 27 28 .LP 29 .nf 30 \fBlong long\fR \fBllroundl\fR(\fBlong double\fR \fIx\fR); 31 .fi 32 33 .SH DESCRIPTION 34 .sp 35 .LP 36 These functions rounds their argument to the nearest integer value, rounding 37 halfway cases away from 0 regardless of the current rounding direction. 38 .SH RETURN VALUES 39 .sp 40 .LP 41 Upon successful completion, these functions return the rounded integer value. 42 .sp 43 .LP 44 If \fIx\fR is NaN, a domain error occurs and an unspecified value is returned. 45 .sp 46 .LP 47 If \fIx\fR is +Inf, a domain error occurs and an unspecified value is returned. 48 .sp 49 .LP 50 If \fIx\fR is -Inf, a domain error occurs and an unspecified value is returned. 51 .sp 52 .LP 53 If the correct value is positive and too large to represent as a \fBlong 54 long\fR, a domain error occurs and an unspecified value is returned. 55 .sp 56 .LP 57 If the correct value is negative and too large to represent as a \fBlong 58 long\fR, a domain error occurs and an unspecified value is returned. 59 .SH ERRORS 60 .sp 61 .LP 62 These functions will fail if: 63 .sp 64 .ne 2 65 .mk 66 .na 67 \fBDomain Error\fR 68 .ad 69 .RS 16n 70 .rt 71 The \fIx\fR argument is NaN or \(+-Inf, or the correct value is not 72 representable as an integer. 73 .sp 74 If the integer expression (\fBmath_errhandling\fR & \fBMATH_ERREXCEPT\fR) is 75 non-zero, then the invalid floating-point exception will be raised. 76 .RE 77 78 .SH USAGE 79 .sp 80 .LP 81 An application wanting to check for exceptions should call 82 \fBfeclearexcept\fR(\fBFE_ALL_EXCEPT\fR) before calling these functions. On 83 return, if \fBfetestexcept\fR(\fBFE_INVALID\fR | \fBFE_DIVBYZERO\fR | 84 \fBFE_OVERFLOW\fR | \fBFE_UNDERFLOW\fR) is non-zero, an exception has been 85 raised. An application should either examine the return value or check the 86 floating point exception flags to detect exceptions. 87 .sp 88 .LP 89 These functions differ from the \fBllrint\fR(3M) functions in that the default 90 rounding direction for the \fBllround()\fR functions round halfway cases away 91 from 0 and need not raise the inexact floating-point exception for non-integer 92 arguments that round to within the range of the return type. 93 .SH ATTRIBUTES 94 .sp 95 .LP 96 See \fBattributes\fR(5) for descriptions of the following attributes: 97 .sp 98 99 .sp 100 .TS 101 tab() box; 102 cw(2.75i) |cw(2.75i) 103 lw(2.75i) |lw(2.75i) 104 . 105 ATTRIBUTE TYPEATTRIBUTE VALUE 106 _ 107 Interface StabilityStandard 108 _ 109 MT-LevelMT-Safe 110 .TE 111 112 .SH SEE ALSO 113 .sp 114 .LP 115 \fBfeclearexcept\fR(3M), \fBfetestexcept\fR(3M), \fBllrint\fR(3M), 116 \fBlrint\fR(3M), \fBlround\fR(3M), \fBmath.h\fR(3HEAD), \fBattributes\fR(5), 117 \fBstandards\fR(5)