__iio_str_to_fixpoint(9)

💅 __iio_str_to_fixpoint(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ this one's a little helper from the IIO subsystem and honestly? it's giving "tiny function, big job" energy. it takes a string and turns it into a fixed-point number, no cap 🎀

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🌸 NAME 🌸

__iio_str_to_fixpoint — Parse a fixed-point number from a string 🦋

like, you hand it text, it hands you back actual numbers. iconic behavior fr fr 💖

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✨ SYNOPSIS ✨

int __iio_str_to_fixpoint (const char *str , int fract_mult , int
       *integer , int *fract , bool scale_db );

that's the whole vibe, bestie — five params, one int coming back at you 👑

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🎀 ARGUMENTS 🎀

• str — The string to parse 💅 this is the raw text going in, the main character of the operation
• fract_mult — Multiplier for the first decimal place, should be a power of 10 ⭐ (so like, keep it a nice clean 10, 100, 1000… iykyk)
• integer — The integer part of the number 🔥 this is where the whole-number chunk lands
• fract — The fractional part of the number 🍓 this is where the decimal-y bit ends up
• scale_db — True if this should parse as dB 🌈 ok so if you're in decibel territory, this flag's for you

ngl bestie, fract_mult says "should be a power of 10" — that's the doc talking, so literally respect it, k? 🙈

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💜 RETURN 💜

0 on success 🎉 or a negative error code if the string could not be parsed 💀 like if the input is cursed, you get a negative number back, not a crash. slay.

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🦋 SEE ALSO 🦋

Kernel file ./drivers/iio/industrialio-core.c — that's the home base 🏠

and then the whole friend group, no one left out:

• iio_device_id(9)
• iio_buffer_enabled(9)
• iio_find_channel_from_si(9)
• iio_device_set_clock(9)
• iio_device_get_clock(9)
• iio_get_time_ns(9)
• iio_read_mount_matrix(9)
• iio_format_value(9)
• iio_str_to_fixpoint(9)
• iio_free_chan_devattr_list(9)
• iio_device_alloc(9)
• iio_device_free(9)
• devm_iio_device_alloc(9)
• iio_chrdev_open(9)
• iio_chrdev_release(9)
• iio_active_scan_mask_index(9)
• iio_device_unregister(9)
• __iio_dev_mode_lock(9)
• __iio_dev_mode_unlock(9)
• iio_device_get_current_mode(9)

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so yeah, that's the function 💖 short page, but it ate. periodt. 💅

🧚 source & version: ./drivers/iio · dated October 2026 · paged as __iio_str_to_fixpoint(9) — mwah, bye bestie 🫶✨