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Full Discussion: Perl Scripting Question
Top Forums Shell Programming and Scripting Perl Scripting Question Post 302945446 by Skrynesaver on Friday 29th of May 2015 11:19:10 AM
Old 05-29-2015
|| is a shorthand for OR, this is common in many C-like languages (or even algol descendants), so if the shift returns false (no element in the default array) the value of $self is set to 7899
This User Gave Thanks to Skrynesaver For This Post:
jnrohit2k
 

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LEARN ABOUT OPENSOLARIS

mlib_vectormulshift_s16c_s16c_sat

mlib_VectorMulShift_U8_U8_Mod(3MLIB)			    mediaLib Library Functions			      mlib_VectorMulShift_U8_U8_Mod(3MLIB)

NAME

       mlib_VectorMulShift_U8_U8_Mod,  mlib_VectorMulShift_U8_U8_Sat,  mlib_VectorMulShift_U8C_U8C_Mod, mlib_VectorMulShift_U8C_U8C_Sat, mlib_Vec-
       torMulShift_S8_S8_Mod,  mlib_VectorMulShift_S8_S8_Sat,  mlib_VectorMulShift_S8C_S8C_Mod,  mlib_VectorMulShift_S8C_S8C_Sat,  mlib_VectorMul-
       Shift_S16_S16_Mod,  mlib_VectorMulShift_S16_S16_Sat,  mlib_VectorMulShift_S16C_S16C_Mod, mlib_VectorMulShift_S16C_S16C_Sat, mlib_VectorMul-
       Shift_S32_S32_Mod, mlib_VectorMulShift_S32_S32_Sat, mlib_VectorMulShift_S32C_S32C_Mod, mlib_VectorMulShift_S32C_S32C_Sat - vector multipli-
       cation with shifting

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_VectorMulShift_U8_U8_Mod(mlib_u8 *z,
	    const mlib_u8 *x, const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_U8_U8_Sat(mlib_u8 *z,
	    const mlib_u8 *x, const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_U8C_U8C_Mod(mlib_u8 *z,
	    const mlib_u8 *x, const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_U8C_U8C_Sat(mlib_u8 *z,
	    const mlib_u8 *x, const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S8_S8_Mod(mlib_s8 *z,
	    const mlib_s8 *x, const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S8_S8_Sat(mlib_s8 *z,
	    const mlib_s8 *x, const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S8C_S8C_Mod(mlib_s8 *z,
	    const mlib_s8 *x, const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S8C_S8C_Sat(mlib_s8 *z,
	    const mlib_s8 *x, const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S16_S16_Mod(mlib_s16 *z,
	    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S16_S16_Sat(mlib_s16 *z,
	    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S16C_S16C_Mod(mlib_s16 *z,
	    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S16C_S16C_Sat(mlib_s16 *z,
	    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S32_S32_Mod(mlib_s32 *z,
	    const mlib_s32 *x, const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S32_S32_Sat(mlib_s32 *z,
	    const mlib_s32 *x, const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S32C_S32C_Mod(mlib_s32 *z,
	    const mlib_s32 *x, const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S32C_S32C_Sat(mlib_s32 *z,
	    const mlib_s32 *x, const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

DESCRIPTION

       Each of these functions performs a multiplication of two vectors, shifts the result, and puts it into a third vector.

       For real data, the following equation is used:

	 z[i] = x[i] * y[i] * 2**(-shift)

       where i = 0, 1, ..., (n - 1).

       For complex data, the following equation is used:

	 z[2*i]     = (x[2*i]*y[2*i] - x[2*i + 1]*y[2*i + 1]) * 2**(-shift)
	 z[2*i + 1] = (x[2*i]*y[2*i + 1] + x[2*i + 1]*y[2*i]) * 2**(-shift)

       where i = 0, 1, ..., (n - 1).

PARAMETERS

       Each of the functions takes the following arguments:

       z	Pointer to the first element of the result vector.

       x	Pointer to the first element of the first source vector.

       y	Pointer to the first element of the second source vector.

       n	Number of elements in each vector.

       shift	Right shifting factor. The ranges of valid shift are:

		  1 <= shift <= 8   for U8, S8, U8C, S8C types
		  1 <= shift <= 16  for S16, S16C types
		  1 <= shift <= 31  for S32, S32C types

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	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_VectorMulShift_U8_Mod(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007				      mlib_VectorMulShift_U8_U8_Mod(3MLIB)
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