readme_testmath2

这里包含了风河vxworks系统中的官方例程的C源代码

FILE LIST -
              testMath2.c

DESCRIPTION - 
	      sin(x), cos(x) and tan(x) return trigonometric functions  of
	      radian  arguments.  Trigonometric argument reduction is car-
	      ried out with respect to the infinitely precise n.
	      asin(x) returns the arc sine of x in the range -n/2 to n/2.
	      acos(x) returns the arc cosine of x in the range 0 to n.
	      atan(x) returns the arc tangent of x in the range -n/2 to n/2.
	      atan2(y,x) and hypot(x,y) (see hypot(3M)) convert  rectangu-
	      lar coordinates (x,y) to polar (r,0); atan2(y,x) computes 0,
	      the argument or phase, by computing an arc tangent of y/x in
	      the range -n to n.

RUNNING DEMO -
	      Place the testMath2.c file in your <Tornado> dir. Depending on 
	      the target you have, define the CPU in your compile line and use
	      the Makefile in the BSP dir. to compile.

	      For MC68LC040 you need to add INCLUDE_SW_FP in config.h
	      and use VX_FP_TASK as the options parameter for taskSpawn() 
              in usrConfig.c.

	      To run this demo invoke the function testmath2()

TESTED ON -   Host/Target : Solaris 2.5.1 /mv1604
	      VxWorks     : 5.3.1

EXAMPLE COMPILE LINE - 
              make CPU=PPC604 testMath2.o

% make testMath2.o
ccppc -B/petaluma1/mayur/tor101-ppc/host/sun4-solaris2/lib/gcc-lib/ 
-mstrict-align -ansi -nostdinc -O2 -fvolatile -fno-builtin -fno-for-scope 
-Wall -I/h   -I. -I/petaluma1/mayur/tor101-ppc/target/config/all 
-I/petaluma1/mayur/tor101-ppc/target/h 
-I/petaluma1/mayur/tor101-ppc/target/src/config 
-I/petaluma1/mayur/tor101-ppc/target/src/drv -DCPU=PPC604  -DMV1600 
-DTARGET_DIR="\"mv1604\""   -c testMath2.c

OUTPUTS/LOGFILE -

On VxWorks target:
==================

-> ld <testMath2.o
value = 747840 = 0xb6940
-> testmath2()
value = 0 = 0x0

The Output on Console:
======================
SUCCESS testing math, part 2