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__Function:__int**ap_scalar_infty***(ap_scalar_t**`op`)- Return
`-1`

if`op`is set to +infty,`-1`

if set to -infty, and`0`

otherwise.

__Function:__int**ap_scalar_sgn***(ap_scalar_t**`op`)- Return the sign of
`op`(`+1`

,`0`

or`-1`

).

__Function:__int**ap_scalar_cmp***(ap_scalar_t**`op1`, ap_scalar_t*`op2`)__Function:__int**ap_scalar_cmp_int***(ap_scalar_t**`op1`, int`op2`)- Exact comparison between two scalars (resp. a scalar and an integer).
Return

`-1`

if`op1`is less than`op2`,`0`

if they are equal, and`+1`

if`op1`

is greater than`op2`.

__Function:__bool**ap_scalar_equal***(ap_scalar_t**`op1`, ap_scalar_t*`op2`);__Function:__bool**ap_scalar_equal_int***(ap_scalar_t**`op1`, int`op2`);- Equality test between two scalars (resp. a scalar and an integer).
Return

`true`

if equality.

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