mst_convertsamples - Convert data samples between numeric types
Contents
Description
mst_convertsamples and mst_convertsamples convert any data samples associated with an MSTrace or
MSTraceSeg to a specified type.
The routines can convert between 32-bit integers (type i), 32-bit floats (type f) and 64-bit doubles
(type d).
When converting float and double sample types to integer type a simple rounding is applied by adding 0.5
to the sample value before converting (truncating) to integer. This compensates for common machine
representations of floating point values (e.g. "40.0" represented by "39.99999999").
If the truncate flag is true data samples will be truncated to integers even if loss of sample precision
is detected. If the truncate flag is false (0) and loss of precision is detected an error is returned.
Loss of precision is determined by testing that the difference between the floating point value and the
(truncated) integer value is greater than 0.000001.
ASCII data samples (type a) cannot be converted, if supplied or requested an error will be returned.
Name
mst_convertsamples - Convert data samples between numeric types
Return Values
mst_convertsamples and mstl_convertsamples return 0 on success and -1 on error.
See Also
ms_intro(3).
Synopsis
#include<libmseed.h>intmst_convertsamples(MSTrace*mst,chartype,flagtruncate);intmstl_convertsamples(MSTraceSeg*seg,chartype,flagtruncate);
