log10() Mathematics Function log10() Compute common logarithm #include <math.h> double log10(z) double z; log10 returns the common (base 10) logarithm of its argument z. ***** Example ***** For an example of this function, see the entry for exp. ***** See Also ***** log(), mathematics library ***** Diagnostics ***** A domain error in log10 (z is less than or equal to zero) sets errno to EDOM and returns zero. COHERENT Lexicon Page 1