Synopsis
		sfheadermath < in.rsf > out.rsf segy=y nkey=-1 memsize=sf_memsize() key= output=

Known functions for float data:
cos, sin, tan, acos, asin, atan,
cosh, sinh, tanh, acosh, asinh, atanh,
exp, log, sqrt, abs, erf, erfc, sign

Known functions for int data: sign, abs

See also sfmath.

An addition operation can be performed by sfadd.

Parameters
		string key= key to replace   int memsize=sf_memsize() Max amount of RAM (in Mb) to be used   int nkey=-1 number of key to replace   string output= Describes the output in a mathematical notation.   bool segy=y [y/n] if SEGY headers