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Full Discussion: Read Strings in as options to switches
Top Forums Shell Programming and Scripting Read Strings in as options to switches Post 302769199 by Corona688 on Monday 11th of February 2013 12:56:45 PM
Old 02-11-2013
Actually, this already accounts for it. See the shift statements. They remove the first argument and move everything down. That's why I can just check $1 every loop.

i.e. if $1=a, $2=b, $3=c, after you do shift, you get $1=b, $2=c.

There's an extra shift in the flags that take arguments to keep the loop in sync.
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LEARN ABOUT SUNOS

mlib_vectormulshift_s32_sat

mlib_VectorMulShift_U8_Mod(3MLIB)			    mediaLib Library Functions				 mlib_VectorMulShift_U8_Mod(3MLIB)

NAME

       mlib_VectorMulShift_U8_Mod,    mlib_VectorMulShift_U8_Sat,    mlib_VectorMulShift_U8C_Mod,   mlib_VectorMulShift_U8C_Sat,   mlib_VectorMul-
       Shift_S8_Mod, mlib_VectorMulShift_S8_Sat, mlib_VectorMulShift_S8C_Mod, mlib_VectorMulShift_S8C_Sat, mlib_VectorMulShift_S16_Mod,  mlib_Vec-
       torMulShift_S16_Sat,  mlib_VectorMulShift_S16C_Mod, mlib_VectorMulShift_S16C_Sat, mlib_VectorMulShift_S32_Mod, mlib_VectorMulShift_S32_Sat,
       mlib_VectorMulShift_S32C_Mod, mlib_VectorMulShift_S32C_Sat - vector multiplication with shifting, in place

SYNOPSIS

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

       mlib_status mlib_VectorMulShift_U8_Mod(mlib_u8 *xz, const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_U8_Sat(mlib_u8 *xz, const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_U8C_Mod(mlib_u8 *xz, const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_U8C_Sat(mlib_u8 *xz, const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S8_Mod(mlib_s8 *xz, const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S8_Sat(mlib_s8 *xz, const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S8C_Mod(mlib_s8 *xz, const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S8C_Sat(mlib_s8 *xz, const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S16_Mod(mlib_s16 *xz, const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S16_Sat(mlib_s16 *xz, const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S16C_Mod(mlib_s16 *xz, const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S16C_Sat(mlib_s16 *xz, const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S32_Mod(mlib_s32 *xz, const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S32_Sat(mlib_s32 *xz, const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S32C_Mod(mlib_s32 *xz, const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

       mlib_status mlib_VectorMulShift_S32C_Sat(mlib_s32 *xz, const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

DESCRIPTION

       Each of these functions performs an in-place multiplication of two vectors and shifts the result.

       For real data, the following equation is used:

       xz[i] = xz[i] * y[i] * 2**(-shift)

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

       For complex data, the following equation is used:

       tmp	   = xz[2*i]
       xz[2*i]	   = (tmp*y[2*i] - xz[2*i + 1]*y[2*i + 1]) * 2**(-shift)
       xz[2*i + 1] = (tmp*y[2*i + 1] + xz[2*i + 1]*y[2*i]) * 2**(-shift)

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

PARAMETERS

       Each of the functions takes the following arguments:

       xz	       Pointer to the first element of the first source and result 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	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_VectorMulShift_U8_U8_Mod(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 				 mlib_VectorMulShift_U8_Mod(3MLIB)
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