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# fmin, fminf, fminl

From cppreference.com
< c‎ | numeric‎ | math

Defined in header `<math.h>` |  |
float fminf( float x, float y ); | (1) | (since C99)
double fmin( double x, double y ); | (2) | (since C99)
long double fminl( long double x, long double y ); | (3) | (since C99)
Defined in header `<tgmath.h>` |  |
#define fmin( x, y ) | (4) | (since C99)

1-3) Returns the smaller of two floating point arguments, treating NaNs as missing data (between a NaN and a numeric value, the numeric value is chosen).
4) Type-generic macro: If any argument has type long double, `fminl` is called. Otherwise, if any argument has integer type or has type double, `fmin` is called. Otherwise, `fminf` is called.

### [edit] Parameters

x, y | - | floating point values

### [edit] Return value

If successful, returns the smaller of two floating point values. The value returned is exact and does not depend on any rounding modes.

### [edit] Error handling

This function is not subject to any of the error conditions specified in math_errhandling.

If the implementation supports IEEE floating-point arithmetic (IEC 60559),

- If one of the two arguments is NaN, the value of the other argument is returned
- Only if both arguments are NaN, NaN is returned

### [edit] Notes

This function is not required to be sensitive to the sign of zero, although some implementations additionally enforce that if one argument is +0 and the other is -0, then -0 is returned.

### [edit] Example

Run this code

    #include <stdio.h>
    #include <math.h>

    int main(void)
    {
        printf("fmin(2,1)    = %f\n", fmin(2,1));
        printf("fmin(-Inf,0) = %f\n", fmin(-INFINITY,0));
        printf("fmin(NaN,-1) = %f\n", fmin(NAN,-1));
    }

Possible output:

    fmin(2,1)    = 1.000000
    fmin(-Inf,0) = -inf
    fmin(NaN,-1) = -1.000000

### [edit] References

- C11 standard (ISO/IEC 9899:2011):

  - 7.12.12.3 The fmin functions (p: 258)

  - 7.25 Type-generic math <tgmath.h> (p: 373-375)

  - F.10.9.3 The fmin functions (p: 530)

- C99 standard (ISO/IEC 9899:1999):

  - 7.12.12.3 The fmin functions (p: 239)

  - 7.22 Type-generic math <tgmath.h> (p: 335-337)

  - F.9.9.3 The fmin functions (p: 466)

### [edit] See also

isless (C99) | checks if the first floating-point argument is less than the second (function) [edit]
fmax fmaxf fmaxl (C99)(C99)(C99) | determines larger of two floating-point values (function) [edit]
C++ documentation for fmin

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