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  12 .TH floor 3M "12 Jul 2006" "SunOS 5.11" "Mathematical Library Functions"
  13 .SH NAME
  14 floor, floorf, floorl \- floor 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 \fBfloor\fR(\fBdouble\fR \fIx\fR);
  22 .fi
  23 
  24 .LP
  25 .nf
  26 \fBfloat\fR \fBfloorf\fR(\fBfloat\fR \fIx\fR);
  27 .fi
  28 
  29 .LP
  30 .nf
  31 \fBlong double\fR \fBfloorl\fR(\fBlong double\fR \fIx\fR);
  32 .fi
  33 
  34 .SH DESCRIPTION
  35 .sp
  36 .LP
  37 These functions compute the largest integral value not greater than \fIx\fR.
  38 .SH RETURN VALUES
  39 .sp
  40 .LP
  41 Upon successful completion, these functions return the largest integral value
  42 not greater than \fIx\fR, expressed as a \fBdouble\fR, \fBfloat\fR, or \fBlong
  43 double\fR, as appropriate for the return type of the function.
  44 .sp
  45 .LP
  46 If \fIx\fR is NaN, a NaN is returned.
  47 .sp
  48 .LP
  49 If \fIx\fR is \(+-Inf or \(+-0, \fIx\fR is returned.
  50 .SH ATTRIBUTES
  51 .sp
  52 .LP
  53 See \fBattributes\fR(5) for descriptions of the following attributes:
  54 .sp
  55 
  56 .sp
  57 .TS
  58 tab() box;
  59 cw(2.75i) |cw(2.75i) 
  60 lw(2.75i) |lw(2.75i) 
  61 .
  62 ATTRIBUTE TYPEATTRIBUTE VALUE
  63 _
  64 Interface StabilityStandard
  65 _
  66 MT-LevelMT-Safe
  67 .TE
  68 
  69 .SH SEE ALSO
  70 .sp
  71 .LP
  72 \fBceil\fR(3M), \fBfeclearexcept\fR(3M), \fBfetestexcept\fR(3M),
  73 \fBisnan\fR(3M), \fBmath.h\fR(3HEAD), \fBattributes\fR(5), \fBstandards\fR(5)