02-11-2009
Hello,
I am amazed of how smooth the code is ...can you explain a little in words what is the logic of the line:
max[$1] = !($1 in max) ? $2 : ($2 > max[$1]) ? $2 : max[$1]
Thanks.
Last edited by gio001; 02-11-2009 at 04:39 PM..
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mlib_vectormaximummag_u8c
mlib_VectorMaximumMag_U8C(3MLIB) mediaLib Library Functions mlib_VectorMaximumMag_U8C(3MLIB)
NAME
mlib_VectorMaximumMag_U8C, mlib_VectorMaximumMag_S8C, mlib_VectorMaximumMag_S16C, mlib_VectorMaximumMag_S32C, mlib_VectorMaximumMag_F32C,
mlib_VectorMaximumMag_D64C - find the first element with the maximum magnitude in a vector
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VectorMaximumMag_U8C(mlib_u8 *max, const mlib_u8 *x, mlib_s32 n);
mlib_status mlib_VectorMaximumMag_S8C(mlib_s8 *max, const mlib_s8 *x, mlib_s32 n);
mlib_status mlib_VectorMaximumMag_S16C(mlib_s16 *max, const mlib_s16 *x, mlib_s32 n);
mlib_status mlib_VectorMaximumMag_S32C(mlib_s32 *max, const mlib_s32 *x, mlib_s32 n);
mlib_status mlib_VectorMaximumMag_F32C(mlib_f32 *max, const mlib_f32 *x, mlib_s32 n);
mlib_status mlib_VectorMaximumMag_D64C(mlib_d64 *max, const mlib_d64 *x, mlib_s32 n);
DESCRIPTION
Each of these functions finds the first element with the maximum magnitude in a complex vector, then puts the real and imaginary parts of
it into max[0] and max[1], respectively.
PARAMETERS
Each of the functions takes the following arguments:
max Pointer to the first element with the maximum magnitude.
x Pointer to the first element of the source vector.
n Number of elements in the source vector.
RETURN VALUES
Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
mlib_VectorMinimumMag_U8C(3MLIB), mlib_MatrixMaximumMag_U8C(3MLIB), mlib_MatrixMinimumMag_U8C(3MLIB), attributes(5)
SunOS 5.10 9 Nov 2004 mlib_VectorMaximumMag_U8C(3MLIB)