Trailing-Edge
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PDP-10 Archives
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SRI_NIC_PERM_FS_1_19910112
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kcc-4/lib/math/ceil.c
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/*
* CEIL.C - ceiling function for math library
*
* This code conforms with the description of the ceil function
* as defined in Harbison and Steele's "C: A Reference Manual",
* section 11.3.6
*/
double ceil(x)
double x;
{
extern double modf();
int i;
if (modf(x, &i) > 0) /* if there's a fractional part of x, */
i++; /* bump up to the next highest integer */
return (double) i;
}