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Subversion Repositories dblclockfft

[/] [dblclockfft/] [trunk/] [bench/] [cpp/] [mpy_tb.cpp] - Diff between revs 6 and 29

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Rev 6	Rev 29
Line 37...	Line 37...
`// License: GPL, v3, as defined and found on www.gnu.org,`	`// License: GPL, v3, as defined and found on www.gnu.org,`
`// http://www.gnu.org/licenses/gpl.html`	`// http://www.gnu.org/licenses/gpl.html`
`//`	`//`
`//`	`//`
`///////////////////////////////////////////////////////////////////////////`	`///////////////////////////////////////////////////////////////////////////`
	`#include "fftsize.h"`
	`#ifdef USE_OLD_MULTIPLY`
`#include "Vshiftaddmpy.h"`	`#include "Vshiftaddmpy.h"`
	`typedef Vshiftaddmpy Vmpy;`
	`#define AW TST_SHIFTADDMPY_AW`
	`#define BW TST_SHIFTADDMPY_BW`
	`#define DELAY (TST_SHIFTADDMPY_AW+2)`
	`#else`
	`#include "Vlongbimpy.h"`
	`typedef Vlongbimpy Vmpy;`
	`#define AW TST_LONGBIMPY_AW`
	`#define BW TST_LONGBIMPY_BW`
	`#define DELAY ((AW/2)+(AW&1)+2)`
	`#endif`

`#include "verilated.h"`	`#include "verilated.h"`
	`#include "twoc.h"`

`class MPYTB {`	`class MPYTB {`
`public:`	`public:`
`Vshiftaddmpy *mpy;`	`Vmpy *mpy;`
`long vals[32];`	`long vals[32];`
`int m_addr;`	`int m_addr;`

`MPYTB(void) {`	`MPYTB(void) {`
`mpy = new Vshiftaddmpy;`	`mpy = new Vmpy;`

`for(int i=0; i<32; i++)`	`for(int i=0; i<32; i++)`
`vals[i] = 0;`	`vals[i] = 0;`
`m_addr = 0;`	`m_addr = 0;`
`}`	`}`
Line 76...	Line 91...
`tick();`	`tick();`
`}`	`}`

`bool test(const int ia, const int ib) {`	`bool test(const int ia, const int ib) {`
`bool success;`	`bool success;`
`int a, b;`	`long a, b, out;`
`long out;`

`a = ia & 0x0ffff;`	`a = sbits(ia, AW);`
`b = ib & 0x0ffff;`	`b = sbits(ib, BW);`
`mpy->i_ce = 1;`	`mpy->i_ce = 1;`
`mpy->i_a = a & 0x0ffff;`	`mpy->i_a = ubits(a, AW);`
`mpy->i_b = b & 0x0ffff;`	`mpy->i_b = ubits(b, BW);`

`if (a&0x8000) a \|= (-1 << 15);`
`if (b&0x8000) b \|= (-1 << 15);`

`vals[m_addr&31] = (long)a * (long)b;`	`vals[m_addr&31] = a * b;`

`tick();`	`tick();`
	`if (rand()&1) {`
	`mpy->i_ce = 0;`
	`tick();`
	`}`

`printf("k=%3d: A =%06x, B =%06x, ANS =%10lx, S=%3d,%3d,%3d,%3d, O = %8x\n",`	`printf("k=%3d: A =%04x, B =%05x -> O = %9lx (ANS=%10lx)\n",`
`m_addr, a & 0x0ffffff, b & 0x0ffffff,`	`m_addr, (int)ubits(a,AW), (int)ubits(b,BW),`
`vals[m_addr&31] & (~(-1l<<40)),`	`(long)mpy->o_r, ubits(vals[m_addr&31], AW+BW+4));`
`mpy->v__DOT__sgn,`
`mpy->v__DOT__r_s[0],`
`mpy->v__DOT__r_s[1],`
`mpy->v__DOT__r_s[2],`
`mpy->o_r);`

`out = mpy->o_r;`	`out = sbits(mpy->o_r, AW+BW);`
`if (out & (1<<31)) out \|= (-1 << 31);`

`m_addr++;`	`m_addr++;`

`success = (m_addr < 20)\|\|(out == vals[(m_addr-18)&31]);`	`success = (m_addr < (DELAY+2))\|\|(out == vals[(m_addr-DELAY)&31]);`
`if (!success) {`	`if (!success) {`
`fprintf(stderr, "WRONG ANSWER: %8lx != %8lx\n", vals[(m_addr-18)&0x01f], out);`	`printf("WRONG ANSWER: %8lx (exp) != %8lx (sut)\n", vals[(m_addr-DELAY)&0x01f], out);`
`exit(-1);`	`exit(-1);`
`}`	`}`

`return success;`	`return success;`
`}`	`}`
Line 138...	Line 147...
`a = (1<<15);`	`a = (1<<15);`
`b = (1<<k);`	`b = (1<<k);`
`tb->test(a, b);`	`tb->test(a, b);`
`}`	`}`

`for(int k=0; k<200; k++) {`	`for(int k=0; k<2048; k++) {`
`int a, b, out;`	`int a, b, out;`

`tb->test(rand(), rand());`	`tb->test(rand(), rand());`
`}`	`}`

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[/] [dblclockfft/] [trunk/] [bench/] [cpp/] [mpy_tb.cpp] - Diff between revs 6 and 29