def TestFloats():
import math
code = synspu.InstructionStream()
proc = synspu.Processor()
spu.set_active_code(code)
code.set_debug(True)
# Create a simple SPU program that computes log for all values bettween
# .01 and 10.0 with .01 increments
start = .65
stop = .75
inc = .01
sp_step = 0x3C23D70A
# r_current = var.Word(0x3C23D70A) # .01 in single precision
r_current = var.Word(0x3F266666)
r_step = var.Word(sp_step) # .01 in single precision
result = var.Word(0)
log = SPULog()
log.setup(code)
log.set_result(result)
log.set_x(r_current)
log_iter = syn_iter(code, int((stop - start) / inc))
for i in log_iter:
log.synthesize(code)
spu.fa(r_current, r_current, r_step)
spu.wrch(result, dma.SPU_WrOutMbox)
# code.print_code()
spe_id = proc.execute(code, mode='async')
x = start
for i in range(int((stop - start) / inc)):
while synspu.spu_exec.stat_out_mbox(spe_id) == 0:
pass
slog = synspu.spu_exec.read_out_mbox(spe_id)
print '%.3f 0x%08X %.08f %.08f ' % (x, slog, _sp_to_float(slog),
math.log(x, 2))
x += inc
proc.join(spe_id)
return
def _compute_ratio(self, ab, c, result):
# Convert ab and c to float
spu.cuflt(ab, ab, 155)
spu.cuflt(c, c, 155)
# Compute ab = ab + c
spu.fa(ab, ab, c)
# Compute c / (ab + c)
fdiv(spu.get_active_code(), result, c, ab, self._one)
return
def TestFloats():
import math
code = synspu.InstructionStream()
proc = synspu.Processor()
spu.set_active_code(code)
code.set_debug(True)
# Create a simple SPU program that computes log for all values bettween
# .01 and 10.0 with .01 increments
start = .65
stop = .75
inc = .01
sp_step = 0x3C23D70A
# r_current = var.Word(0x3C23D70A) # .01 in single precision
r_current = var.Word(0x3F266666)
r_step = var.Word(sp_step) # .01 in single precision
result = var.Word(0)
log = SPULog()
log.setup(code)
log.set_result(result)
log.set_x(r_current)
log_iter = syn_iter(code, int((stop - start) / inc))
for i in log_iter:
log.synthesize(code)
spu.fa(r_current, r_current, r_step)
spu.wrch(result, dma.SPU_WrOutMbox)
# code.print_code()
spe_id = proc.execute(code, mode = 'async')
x = start
for i in range(int((stop - start) / inc)):
while synspu.spu_exec.stat_out_mbox(spe_id) == 0: pass
slog = synspu.spu_exec.read_out_mbox(spe_id)
print '%.3f 0x%08X %.08f %.08f ' % (x, slog, _sp_to_float(slog), math.log(x, 2))
x += inc
proc.join(spe_id)
return