diff options
Diffstat (limited to 'test/dt_arith.c')
| -rw-r--r-- | test/dt_arith.c | 58 |
1 files changed, 56 insertions, 2 deletions
diff --git a/test/dt_arith.c b/test/dt_arith.c index fd470c5..e8fb1cd 100644 --- a/test/dt_arith.c +++ b/test/dt_arith.c @@ -369,6 +369,8 @@ static int without_hardware_g = 0; void some_dummy_func(float x); static hbool_t overflows(unsigned char *origin_bits, hid_t src_id, size_t dst_num_bits); static int my_isnan(dtype_t type, void *val); +static int my_isinf(dtype_t type, int endian, unsigned char *val, size_t size, + size_t mpos, size_t msize, size_t epos, size_t esize); /*------------------------------------------------------------------------- * Function: fpe_handler @@ -2378,6 +2380,43 @@ my_isnan(dtype_t type, void *val) /*------------------------------------------------------------------------- + * Function: my_isinf + * + * Purpose: Determines whether VAL points to +/-infinity. + * + * Return: TRUE or FALSE + * + * Programmer: Raymond Lu + * Monday, June 20, 2005 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +static int +my_isinf(dtype_t type, int endian, unsigned char *val, size_t size, + size_t mpos, size_t msize, size_t epos, size_t esize) +{ + unsigned char *bits; + int retval = 0; + int i; + ssize_t ret1=0, ret2=0; + + bits = (unsigned char*)calloc(1, size); + for (i=0; i<size; i++) + bits[size-(i+1)] = *(val + ENDIAN(size, i)); + + if((ret1=H5T_bit_find(bits, mpos, msize, H5T_BIT_LSB, 1))<0 && + (ret2=H5T_bit_find(bits, epos, esize, H5T_BIT_LSB, 0))<0) + retval = 1; + + free(bits); + + return retval; +} + + +/*------------------------------------------------------------------------- * Function: test_conv_flt_1 * * Purpose: Test conversion of floating point values from SRC to @@ -2414,14 +2453,15 @@ test_conv_flt_1 (const char *name, int run_test, hid_t src, hid_t dst) unsigned char *buf = NULL; /*buffer for conversion */ unsigned char *saved = NULL; /*original values */ char str[256]; /*hello string */ + void *aligned=NULL; /*aligned buffer */ float hw_f; /*hardware-converted */ double hw_d; /*hardware-converted */ - void *aligned=NULL; /*aligned buffer */ #if H5_SIZEOF_LONG_DOUBLE!=H5_SIZEOF_DOUBLE long double hw_ld; /*hardware-converted */ #endif unsigned char *hw=NULL; /*ptr to hardware-conv'd*/ int underflow; /*underflow occurred */ + int overflow; /*overflow occurred */ int uflow=0; /*underflow debug counters*/ size_t j, k; /*counters */ int endian; /*machine endianess */ @@ -2430,6 +2470,7 @@ test_conv_flt_1 (const char *name, int run_test, hid_t src, hid_t dst) size_t src_esize; /* Source type's exponent size */ size_t dst_epos; /* Destination type's exponent position */ size_t dst_esize; /* Destination type's exponent size */ + size_t dst_mpos; /* Destination type's mantissa position */ size_t dst_msize; /* Destination type's mantissa size */ size_t src_nbits; /* source length in bits */ size_t dst_nbits; /* dst length in bits */ @@ -2548,7 +2589,7 @@ test_conv_flt_1 (const char *name, int run_test, hid_t src, hid_t dst) dst_nbits = H5Tget_precision(dst); /* not 8*dst_size, esp on J90 - QAK */ dst_ebias=H5Tget_ebias(dst); H5Tget_fields(src,NULL,&src_epos,&src_esize,NULL,NULL); - H5Tget_fields(dst,NULL,&dst_epos,&dst_esize,NULL,&dst_msize); + H5Tget_fields(dst,NULL,&dst_epos,&dst_esize,&dst_mpos,&dst_msize); endian = H5Tget_order(H5T_NATIVE_FLOAT); /* Allocate buffers */ @@ -2651,6 +2692,7 @@ test_conv_flt_1 (const char *name, int run_test, hid_t src, hid_t dst) hw_f = (float)(*((double*)aligned)); hw = (unsigned char*)&hw_f; underflow = HDfabs(*((double*)aligned)) < FLT_MIN; + overflow = HDfabs(*((double*)aligned)) > FLT_MAX; } else if (FLT_DOUBLE==dst_type) { hw_d = *((double*)aligned); hw = (unsigned char*)&hw_d; @@ -2667,10 +2709,12 @@ test_conv_flt_1 (const char *name, int run_test, hid_t src, hid_t dst) hw_f = *((long double*)aligned); hw = (unsigned char*)&hw_f; underflow = HDfabsl(*((long double*)aligned)) < FLT_MIN; + overflow = HDfabsl(*((long double*)aligned)) > FLT_MAX; } else if (FLT_DOUBLE==dst_type) { hw_d = *((long double*)aligned); hw = (unsigned char*)&hw_d; underflow = HDfabsl(*((long double*)aligned)) < DBL_MIN; + overflow = HDfabsl(*((long double*)aligned)) > DBL_MAX; } else { hw_ld = *((long double*)aligned); hw = (unsigned char*)&hw_ld; @@ -2740,6 +2784,10 @@ test_conv_flt_1 (const char *name, int run_test, hid_t src, hid_t dst) * If the src number is smaller than the dst MIN float number, * consider it okay if the converted sw and hw dst are both * less than or equal to the dst MIN float number. + * If overflow happens when the src value is greater than + * the maximum dst value, the library assign INFINITY to dst. + * This might be different from what the compiler does, i.e. + * the SGI compiler assigns the dst's maximal value. */ { double check_mant[2]; @@ -2751,6 +2799,9 @@ test_conv_flt_1 (const char *name, int run_test, hid_t src, hid_t dst) if (underflow && HDfabsf(x) <= FLT_MIN && HDfabsf(hw_f) <= FLT_MIN) continue; /* all underflowed, no error */ + if (overflow && my_isinf(dst_type, endian, buf+j*sizeof(float), + dst_size, dst_mpos, dst_msize, dst_epos, dst_esize)) + continue; /* all overflowed, no error */ check_mant[0] = HDfrexpf(x, check_expo+0); check_mant[1] = HDfrexpf(hw_f, check_expo+1); } else if (FLT_DOUBLE==dst_type) { @@ -2759,6 +2810,9 @@ test_conv_flt_1 (const char *name, int run_test, hid_t src, hid_t dst) if (underflow && HDfabs(x) <= DBL_MIN && HDfabs(hw_d) <= DBL_MIN) continue; /* all underflowed, no error */ + if (overflow && my_isinf(dst_type, endian, buf+j*sizeof(double), + dst_size, dst_mpos, dst_msize, dst_epos, dst_esize)) + continue; /* all overflowed, no error */ check_mant[0] = HDfrexp(x, check_expo+0); check_mant[1] = HDfrexp(hw_d, check_expo+1); #if H5_SIZEOF_LONG_DOUBLE!=H5_SIZEOF_DOUBLE |