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.TH "_TIFFAUXILIARY" "3tiff" "Sep 08, 2023" "4.6" "LibTIFF"
.SH NAME
_TIFFauxiliary \- auxiliary functions
.SH SYNOPSIS
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.INDENT 3.5
.sp
.nf
.ft C
#include <tiffio.h>
.ft P
.fi
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.TP
.B uint32_t  _TIFFClampDoubleToUInt32(double  val) 
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.TP
.B uint32_t  _TIFFMultiply32(TIFF  *tif, uint32_t  first, uint32_t  second, const  char  *where) 
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.B uint64_t  _TIFFMultiply64(TIFF  *tif, uint64_t  first, uint64_t  second, const  char  *where) 
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.SH DESCRIPTION
.sp
\fI\%_TIFFClampDoubleToUInt32()\fP clamps double values into the range
of \fBuint32_t\fP (i.e. 0 .. 0xFFFFFFFF)
.sp
\fI\%_TIFFMultiply32()\fP and \fI\%_TIFFMultiply64()\fP checks for
an integer overflow of the multiplication result and return the multiplication
result or \fI0\fP if an overflow would happen.
The string \fIwhere\fP is printed in the error message in case an overflow
happens and can be used to indicate where the function was called.
.SH SEE ALSO
.sp
\fI\%libtiff\fP (3tiff),
.SH AUTHOR
LibTIFF contributors
.SH COPYRIGHT
1988-2022, LibTIFF contributors
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