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 esp-extra-scripts

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ffi_float.py

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# test ffi float support

import sys

try:

import ffi

except ImportError:

print("SKIP")

sys.exit()

def ffi_open(names):

err = None

for n in names:

try:

mod = ffi.open(n)

return mod

except OSError as e:

err = e

raise err

libc = ffi_open(('libc.so', 'libc.so.0', 'libc.so.6', 'libc.dylib'))

strtof = libc.func("f", "strtof", "sp")

print('%.6f' % strtof('1.23', None))

strtod = libc.func("d", "strtod", "sp")

print('%.6f' % strtod('1.23', None))

# test passing double and float args

libm = ffi_open(('libm.so', 'libm.so.6', 'libc.so.0', 'libc.so.6', 'libc.dylib'))

tgamma = libm.func('d', 'tgamma', 'd')

for fun in (tgamma,):

for val in (0.5, 1, 1.0, 1.5, 4, 4.0):

print('%.6f' % fun(val))