readme_testmath1

这里包含了风河vxworks系统中的官方例程的C源代码

FILE LIST -
              testMath1.c

DESCRIPTION -
	      This program is a test routine for the math library.
	      Some of the functions being tested here are as follows:

	      double ceil(double x);
	      ceil(x) returns the least  integral  value  greater  than  or
	      equal  to  x.

	      double floor(double x);
	      floor(x) returns the greatest integral  value  less  than  or
	      equal  to  x.

	      double fabs(double x);
	      fabs(x) returns the absolute value of x.

	      double fmod(double x, double y);
	      fmod(x,y) returns a remainder  of  x  with respect  to  y.

	      double modf(double value, double *iptr);
	      modf() returns the signed  fractional part of value and
	      store the integral part indirectly in the location pointed to
	      by iptr.

	      double ldexp(double value, int exp);
	      ldexp() returns the quantity value *  2exp.

	      double frexp(double value, int *eptr);
	      frexp() returns  the  mantissa  of  a  double  value, and
	      stores the exponent indirectly in the location pointed
	      to by eptr. If value is zero, both results returned by
	      frexp() are zero.

	      To run this demo invoke the function testmath1()

RUNNING DEMO -
	      Place the testMath1.c file in your <Tornado> dir. 
              Depending on the target architecutre define the CPU 
              in your compile line; use the Makefile of your BSP dir. 
              to compile the demo code.

TESTED ON -   Host/Target : Solaris 2.5.1 / mv177
	      VxWorks     : 5.3.1

EXAMPLE COMPILE LINE -
	      make  testMath1.o

cc68k -B/petaluma1/mayur/tor101-ppc/host/sun4-solaris2/lib/gcc-lib/ -m68040 -ans
i -nostdinc -O2 -fvolatile -fno-builtin -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=MC68060     -c testMath1.c

OUTPUTS/LOGFILE -

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

-> ld <testMath1.o
value = 1312552 = 0x140728
-> testmath1()
value = 0 = 0x0

The Output on Console:
======================
fmod(-3.0, 3.0) returns 0.000000
frexp(0.0, &xexp) returns 0.000000, 0
ldexp(0.0, 36) returns 0.000000
SUCCESS testing math, part 1


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

EXAMPLE COMPILE LINE -
              make  testMath1.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 testMath1.c


OUTPUTS/LOGFILE -

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

-> ld <testMath1.o
value = 699600 = 0xaacd0
-> testmath1()
value = 0 = 0x0

The Output on Console:
======================

fmod(-3.0, 3.0) returns 0.000000
frexp(0.0, &xexp) returns 0.000000, 0
ldexp(0.0, 36) returns 0.000000
SUCCESS testing math, part 1