diff options
-rw-r--r-- | libgfortran/ChangeLog | 8 | ||||
-rw-r--r-- | libgfortran/intrinsics/random.c | 26 |
2 files changed, 21 insertions, 13 deletions
diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog index 1d4b423..0f812ea 100644 --- a/libgfortran/ChangeLog +++ b/libgfortran/ChangeLog @@ -1,4 +1,12 @@ 2004-06-13 Steven G. Kargl <kargls@comcast.net> + Tobias Schlueter <tobias.schlueter@physik.uni-muenchen.de> + + * random.c: Fix several spelling and formatting mistakes in + comments. + (random_r8): Fix loop to make random numbers range in [0,1(. + + +2004-06-13 Steven G. Kargl <kargls@comcast.net> * random.c (random_r4): Burn a random number. (random_r8): fix infinite loop. diff --git a/libgfortran/intrinsics/random.c b/libgfortran/intrinsics/random.c index 73a6ced..ef09d85 100644 --- a/libgfortran/intrinsics/random.c +++ b/libgfortran/intrinsics/random.c @@ -416,7 +416,7 @@ arandom_r8 (gfc_array_r8 * harv) wish to acknowledge the source, as a courtesy. "There is no copyright on the code below." included the original -KISS algorithm. */ +KISS algorithm. */ #include "config.h" #include "libgfortran.h" @@ -449,7 +449,7 @@ kiss_random_kernel(void) } -/* This function produces a REAL(4) value in the uniform distribution +/* This function produces a REAL(4) value from the uniform distribution with range [0,1). */ void @@ -485,7 +485,7 @@ prefix(random_r8) (GFC_REAL_8 *x) + kiss_random_kernel (); *x = (GFC_REAL_8)kiss / (GFC_REAL_8)(~(GFC_UINTEGER_8) 0); } - while (*x == 0); + while (*x == 1.0); } @@ -554,7 +554,7 @@ prefix(arandom_r4) (gfc_array_r4 *x) } } -/* This function fills a REAL(8) array with valuse from the uniform +/* This function fills a REAL(8) array with values from the uniform distribution with range [0,1). */ void @@ -620,7 +620,7 @@ prefix(arandom_r8) (gfc_array_r8 *x) } /* prefix(random_seed) is used to seed the PRNG with either a default - set of seeds or user specified set of seed. prefix(random_seed) + set of seeds or user specified set of seeds. prefix(random_seed) must be called with no argument or exactly one argument. */ void @@ -633,7 +633,7 @@ random_seed (GFC_INTEGER_4 *size, gfc_array_i4 * put, if (size == NULL && put == NULL && get == NULL) { /* From the standard: "If no argument is present, the processor assigns - a processor-dependent value to the seed." */ + a processor-dependent value to the seed." */ kiss_seed[0] = kiss_default_seed[0]; kiss_seed[1] = kiss_default_seed[1]; kiss_seed[2] = kiss_default_seed[2]; @@ -645,37 +645,37 @@ random_seed (GFC_INTEGER_4 *size, gfc_array_i4 * put, if (put != NULL) { - /* If the rank of the array is not 1, abort */ + /* If the rank of the array is not 1, abort. */ if (GFC_DESCRIPTOR_RANK (put) != 1) runtime_error ("Array rank of PUT is not 1."); - /* If the array is too small, abort */ + /* If the array is too small, abort. */ if (((put->dim[0].ubound + 1 - put->dim[0].lbound)) < kiss_size) runtime_error ("Array size of PUT is too small."); if (put->dim[0].stride == 0) put->dim[0].stride = 1; - /* This code now should do correct strides. */ + /* This code now should do correct strides. */ for (i = 0; i < kiss_size; i++) kiss_seed[i] =(GFC_UINTEGER_4) put->data[i * put->dim[0].stride]; } - /* Return the seed to GET data */ + /* Return the seed to GET data. */ if (get != NULL) { - /* If the rank of the array is not 1, abort. */ + /* If the rank of the array is not 1, abort. */ if (GFC_DESCRIPTOR_RANK (get) != 1) runtime_error ("Array rank of GET is not 1."); - /* If the array is too small, abort. */ + /* If the array is too small, abort. */ if (((get->dim[0].ubound + 1 - get->dim[0].lbound)) < kiss_size) runtime_error ("Array size of GET is too small."); if (get->dim[0].stride == 0) get->dim[0].stride = 1; - /* This code now should do correct strides. */ + /* This code now should do correct strides. */ for (i = 0; i < kiss_size; i++) get->data[i * get->dim[0].stride] = (GFC_INTEGER_4) kiss_seed[i]; } |