v?SinCos

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 12/16/2022

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v?SinCos

Computes sine and cosine of vector elements.

Syntax

vsSinCos( n, a, y, z );

vsSinCosI(n, a, inca, y, incy, z, incz);

vmsSinCos( n, a, y, z, mode );

vmsSinCosI(n, a, inca, y, incy, z, incz, mode);

vdSinCos( n, a, y, z );

vdSinCosI(n, a, inca, y, incy, z, incz);

vmdSinCos( n, a, y, z, mode );

vmdSinCosI(n, a, inca, y, incy, z, incz, mode);

Include Files

mkl.h

Input Parameters

Name	Type	Description
n	const MKL_INT	Specifies the number of elements to be calculated.
a	const float* for vsSinCos, vmsSinCos const double* for vdSinCos, vmdSinCos	Pointer to an array that contains the input vector a.
inca, incy, incz	const MKL_INT	Specifies increments for the elements of `a`, `y`, and `z`.
mode	const MKL_INT64	Overrides global VM mode setting for this function call. See vmlSetMode for possible values and their description.

Output Parameters

Name	Type	Description
y, z	float* for vsSinCos, vmsSinCos double* for vdSinCos, vmdSinCos	Pointers to arrays that contain the output vectors y (for sinevalues) and `z`(for cosine values).

Name

Type

Description

y, z

float* for vsSinCos, vmsSinCos

double* for vdSinCos, vmdSinCos

Pointers to arrays that contain the output vectors y (for sinevalues) and z(for cosine values).

Description

The function computes sine and cosine of vector elements.

Note that arguments abs(a[i]) ≤ 2¹³and abs(a[i]) ≤ 2¹⁶for single and double precisions respectively are called fast computational path. These are trigonometric function arguments for which VM provides the best possible performance. Avoid arguments that do not belong to the fast computational path in the VM High Accuracy (HA) and Low Accuracy (LA) functions. Alternatively, you can use VM Enhanced Performance (EP) functions that are fast on the entire function domain. However, these functions provide less accuracy.

Special Values for Real Function v?SinCos(x)
Argument	Result 1	Result 2	VM Error Status	Exception
+0	+0	+1
-0	-0	+1
+∞	QNAN	QNAN	VML_STATUS_ERRDOM	INVALID
-∞	QNAN	QNAN	VML_STATUS_ERRDOM	INVALID
QNAN	QNAN	QNAN
SNAN	QNAN	QNAN		INVALID

Specifications for special values of the complex functions are defined according to the following formula

Sin(z) = -i*Sinh(i*z).

Product and Performance Information
Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex. Notice revision #20201201

Product and Performance Information

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.

Notice revision #20201201

Parent topic: Trigonometric Functions

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Developer Reference for Intel® oneAPI Math Kernel Library for C

v?SinCos