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Test signed narrow arguments in FFI better.

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* test-suite/standalone/test-ffi-lib.c (test_ffi_s16_s8): New function.
* test-suite/standalone/test-ffi: Test it.  Also test test_ffi_sum with
  both positive and negative values for the narrower-than-64-bit
  arguments.
This commit is contained in:
Ken Raeburn 2012-05-20 18:34:56 -04:00
parent 499f3de0d7
commit 8e7cacf139
2 changed files with 16 additions and 2 deletions
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12
test-suite/standalone/test-ffi
View file

@ -99,6 +99,10 @@ exec guile -q -s "$0" "$@"
(pointer->procedure int16 (dynamic-func "test_ffi_s16_u8" lib) (list uint8)))
(test (f-s16-u8 10) -19990)
(define f-s16-s8
(pointer->procedure int16 (dynamic-func "test_ffi_s16_s8" lib) (list int8)))
(test (f-s16-s8 -10) -20010)
(define f-u16-u8
(pointer->procedure uint16 (dynamic-func "test_ffi_u16_u8" lib) (list uint8)))
(test (f-u16-u8 10) 40010)
@ -166,8 +170,12 @@ exec guile -q -s "$0" "$@"
(define f-sum
(pointer->procedure int64 (dynamic-func "test_ffi_sum" lib)
(list int8 int16 int32 int64)))
(test (f-sum -1 2000 -30000 40000000000)
(+ -1 2000 -30000 40000000000))
; test sign-extension of narrow arguments
(test (f-sum -1 -2000 -30000 40000000000)
(+ -1 -2000 -30000 40000000000))
; test zero-extension of narrow arguments
(test (f-sum 1 2000 30000 40000000000)
(+ 1 2000 30000 40000000000))
;;
;; Structs

6
test-suite/standalone/test-ffi-lib.c
View file

@ -87,6 +87,12 @@ scm_t_int16 test_ffi_s16_u8 (scm_t_uint8 a)
return -20000 + a;
}
scm_t_int16 test_ffi_s16_s8 (scm_t_int8 a);
scm_t_int16 test_ffi_s16_s8 (scm_t_int8 a)
{
return -20000 + a;
}
scm_t_int16 test_ffi_s16_s64 (scm_t_int64 a);
scm_t_int16 test_ffi_s16_s64 (scm_t_int64 a)
{