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From: gwyn@smoke.BRL.MIL (Doug Gwyn )
Newsgroups: comp.lang.c
Subject: Re: Fortran computes cosine 300 times faster than C (on Sun3)
Keywords: Fortran, C, cosine, speed
Message-ID: <9824@smoke.BRL.MIL>
Date: 8 Mar 89 21:11:22 GMT
References: <765@uceng.UC.EDU> <16279@mimsy.UUCP>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 9

In article <16279@mimsy.UUCP> chris@mimsy.UUCP (Chris Torek) writes:
>`COS' is an intrisinc function in Fortran.  ...

Three other contributions to the difference in running time are:
	(a) C's cos() computes a double-precision value.
	(b) The C code required conversion from double to
		single precision for the assignment.
	(c) C's semantics required that the multiplications
		be performed in double precision.