Reference:

Zaykin DV, Zhivotovsky LA, Westfall PH, and Weir BS. 2002. 
Truncated product method for combining p-values. Genetic 
Epidemiology 22:170-185. 

!!!Note the typo (corrected in the version posted here) --
top of equation (2) should read (-ln w)^s rather than (-ln w)*s

Files:

tpm.cpp: C++ code implementing the combination method for independent
   p-values (equations 1,2 on page 7 in tpm.pdf or tpm.ps)
tpm.exe: Executable compiled for Windows
tpm.x: Executable compiled for SunOS

tpmw.cpp: weighted TPM for independent p-values

Tpmw.r: R code for weighted TPM for independent p-values
(depends on tpmwR.cpp which should be first compiled as
R CMD SHLIB tpmwR.cpp)