HP-UX Reference (11i v2 03/08) - 3 Library Functions A-M (vol 6)

c
cos(3M) cos(3M)
cosf(), cosl() : ISO/IEC C99 (including Annex F, ‘‘IEC 60559 floating-point arithmetic’’)
Section 3−−118 Hewlett-Packard Company − 2 − HP-UX 11i Version 2: August 2003