conform to the ISO/IEC 9899:1999(E) standard. They are similar to the
     corresponding double-precision functions (which have the same name, with-
     out the "f" at the end). The double-precision functions have their own
     pages. Wherever the double-precision functions use a double-precision
     floating-point value (as an argument or return value), these functions
     use a single-precision floating-point value.

     acosf()

     acoshf()

     asinf()

     asinhf()

     atanf()

     atan2f()

     atanhf()

     cbrtf()

     cosf()

     coshf()

     erff()

     erfcf()

     hypotf()

     logf()

     log2f()

     log10f()

     log1p()

     powf()

     sinf()

     sinhf()

     sqrtf()

     tanf()

     tanhf()

     expm1f()

     fabsf()

     fdimf()

     floorf()

     fmaf()

     fmaxf()

     fminf()

     fmodf()

     frexpf()

     ilogbf()

     ldexpf()

     lgammaf()

     llrintf()

     llroundf()

     logbf()

     lrintf()

     lround()

     modff()

     nanf()

     nextafterf()

     remainderf()

     remquof()

     rintf()

     roundf()

     scalblnf()

     scalbnf()